Photochromic articles that include photochromic-dichroic materials

ABSTRACT

The present invention relates to photochromic articles that include a substrate and at least one photochromic material that is adapted to change from an unactivated form to an activated form by exposure to radiation substantially in the wavelength range from 380 to 450 nanometers when measured over a range of from 380 to 700 nanometers. The photochromic article is also adapted to retain at least 12 percent of the delta OD measured in the Outdoor Test when tested in the Behind the Windshield Test. The photochromic material can be selected from certain compounds including, for example, fluoranthenoxazines, naphthopyrans, phenanthropyrans, fluoranthenopyrans, and indenonaphthopyrans, which each have bonded thereto at least one chiral or achiral lengthening group that provides the photochromic compound with dichroic properties. The present invention also relates to methods of forming a photochromic article.

FIELD

The present invention relates to photochromic articles that include asubstrate and one or more photochromic-dichroic materials that eachinclude at least one chiral or achiral lengthening group, and which havephotochromic activity when an ultraviolet radiation blockingtransparency is interposed between the photochromic article and a sourceof actinic radiation.

BACKGROUND

Conventional linearly polarizing elements, such as linearly polarizinglenses for sunglasses and linearly polarizing filters, are typicallyformed from stretched polymer sheets containing a dichroic material,such as a dichroic dye. Consequently, conventional linearly polarizingelements are static elements having a single, linearly polarizing state.Accordingly, when a conventional linearly polarizing element is exposedto either randomly polarized radiation or reflected radiation of theappropriate wavelength, some percentage of the radiation transmittedthrough the element will be linearly polarized.

In addition, conventional linearly polarizing elements are typicallytinted. Typically, conventional linearly polarizing elements contain acoloring agent and have an absorption spectrum that does not vary inresponse to actinic radiation. The color of the conventional linearlypolarizing element will depend upon the coloring agent used to form theelement, and most commonly, is a neutral color (for example, brown orgray). Thus, while conventional linearly polarizing elements are usefulin reducing reflected light glare, because of their tint, they aretypically not well suited for use under low-light conditions.

Conventional linearly polarizing elements are typically formed usingsheets of stretched polymer films containing a dichroic material.Correspondingly, while dichroic materials are capable of preferentiallyabsorbing one of two orthogonal plane polarized components oftransmitted radiation, if the molecules of the dichroic material are notsuitably positioned or arranged, no net linear polarization oftransmitted radiation will be achieved. Without intending to be bound byany theory it is believed that due to the random positioning of themolecules of the dichroic material, selective absorption by theindividual molecules will cancel each other such that no net or overalllinear polarizing effect is achieved. As such, it is typically necessaryto position or arrange the molecules of the dichroic material byalignment with another material so as to achieve a net linearpolarization.

A common method of aligning the molecules of a dichroic dye involvesheating a sheet or layer of polyvinyl alcohol (“PVA”) to soften the PVAand then stretching the sheet to orient the PVA polymer chains.Thereafter, the dichroic dye is impregnated into the stretched sheet,and the impregnated dye molecules adopt the orientation of the polymerchains. Resultantly, at least some of the dye molecules become aligned,such that the long axis of each aligned dye molecule is generallyparallel to the oriented polymer chains. Alternatively, the dichroic dyecan be first impregnated into the PVA sheet, and thereafter the sheetcan be heated and stretched as described above to orient the PVA polymerchains and associated dye. In this manner, the molecules of the dichroicdye can be suitably positioned or arranged amongst the oriented polymerchains of the PVA sheet, and a net linear polarization can becorrespondingly achieved. As a result, the PVA sheet can be made tolinearly polarize transmitted radiation, and correspondingly a linearlypolarizing filter can thus be formed.

Conventional photochromic elements, such as photochromic lenses that areformed using conventional photochromic materials are generally capableof converting from a first state, for example a “clear state,” to asecond state, for example a “colored state,” in response to exposure toactinic radiation, and reverting back to the first state when exposureto the actinic radiation is discontinued or reduced. Thus, conventionalphotochromic elements are generally well suited for use in bothlow-light and bright conditions. Conventional photochromic elements,however, that do not include linearly polarizing filters are generallynot capable of linearly polarizing radiation. The absorption ratio ofconventional photochromic elements, in either state, is generally lessthan two. Therefore, conventional photochromic elements are not capableof reducing reflected light glare to the same extent as conventionallinearly polarizing elements.

With conventional photochromic elements that are activated by exposureto actinic radiation that includes ultraviolet (UV) light, when a UVlight absorbing filter is positioned between the source of actinicradiation and the conventional photochromic element, the conventionalphotochromic element typically will not be sufficiently converted from afirst non-colored state to a second colored state. An example of such aUV light absorbing filter is a transparency that includes at least onelayer of silica-based glass, such as windshields used in automotive,nautical, aircraft, and railway applications.

It would be desirable to develop new photochromic articles that providea combination of photochromic properties and linearly polarizingproperties that are both activated by exposure to a source of actinicradiation passing through a transparent filter, such as a windshield.

SUMMARY

In accordance with some embodiments of the present invention there isprovided a photochromic article that comprises: (a) a substrate; and (b)at least one photochromic material adapted to change from an unactivatedform to an activated form by exposure to radiation substantially in thewavelength range from 380 to 450 nanometers when measured over a rangeof from 380 to 700 nanometers. The photochromic article is adapted toretain at least 12 percent of the delta OD (Δ OD) measured in theOutdoor Test when tested in the Behind the Windshield Test. Thephotochromic material (b) is chosen from one or more photochromicmaterials (1) through (14) as described further herein below. Thephotochromic material (b) is, with some embodiments, aphotochromic-dichroic material.

With some embodiments, the photochromic material is chosen from (1) atleast one photochromic material chosen from at least onefluoranthenoxazine represented by the following Formula (I),

With reference to Formula (I), (a) R₁ is chosen from hydrogen, C₁-C₈alkyl, C₃-C₇ cycloalkyl, phen(C₁-C₄)alkyl, naphth(C₁-C₄)alkyl, allyl,acrylyloxy(C₂-C₆)alkyl, methacrylyloxy(C₂-C₆)alkyl, C₂-C₄acyloxy(C₂-C₆)alkyl, carboxy(C₂-C₆)alkyl, cyano(C₂-C₆)alkyl,hydroxy(C₂-C₆)alkyl, triarylsilyl, triarylsilyloxy,tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, C₁-C₆ alkoxy(C₂-C₄)alkyl or(C₂H₄O)_(r)—CH₃, wherein r is an integer from 1 to 6.

With further reference to Formula (I), (b) R₂ is chosen from C₁-C₅alkyl, C₁-C₅ alkoxy, nitro, cyano, C₁-C₈ alkoxycarbonyl, C₁-C₄ acyloxy,halo, C₁-C₄ monohaloalkyl or C₁-C₄ polyhaloalkyl; said halo substituentsbeing chloro, fluoro, iodo or bromo and q is 0, 1 or 2.

With additional reference to Formula (I), (c) R₃ and R₄ are eachindependently chosen from C₁-C₅ alkyl, benzyl, phenyl, mono- ordi-substituted phenyl, said phenyl substituents being C₁-C₅ alkyl orC₁-C₅ alkoxy; or R₃ and R₄ taken together form a group chosen from acyclic ring of from 5 to 8 carbon atoms which includes the spiro carbonatom.

With further additional reference to Formula (I), (d) R₅ is chosen fromhydrogen, —CH₂Q and —C(O)W, wherein Q is halogen, hydroxy, benzoyloxy,C₁-C₆ alkoxy, C₂-C₆ acyloxy, amino, C₁-C₆ mono-alkylamino, C₁-C₆dialkylamino, morpholino, piperidino, 1-indolinyl, pyrrolidyl,triarylsilyl, triarylsilyloxy, tri(C₁-C₆)alkylsilyl,tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, or the group, —OCH(R₈)Z; W is thegroup, —OCH(R₈)Z, or an unsubstituted, mono-substituted, ordi-substituted heterocyclic ring containing 5 to 6 ring atoms, whichring includes as the hetero atom a nitrogen atom alone or one additionalhetero atom of nitrogen or oxygen; wherein Z is —CN, —CF₃, halogen,—C(O)R₈, or —COOR₅, R₈ is hydrogen or C₁-C₆ alkyl; said heterocyclicring substituents being chosen from C₁-C₆ alkyl or C₁-C₆ alkoxy; or W is—OR₉ or —N(R₁₀)R₁₁, wherein R₉ is chosen from hydrogen, allyl, C₁-C₆alkyl, phenyl, mono(C₁-C₆)alkyl substituted phenyl,mono(C₁-C₆)alkoxy-substituted phenyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxysubstituted phenyl(C₁-C₃)alkyl, C₁-C₆ alkoxy(C₂-C₄)alkyl, or C₁-C₆haloalkyl; and R₁₀ and R₁₁ are each independently chosen from hydrogen,C₁-C₆ alkyl, C₅-C₇ cycloalkyl, phenyl, mono- or di-substituted phenyl,or R₁₀ and R₁₁ together with the nitrogen atom form a mono- ordi-substituted or unsubstituted heterocyclic ring containing from 5 to 6ring atoms, which ring includes as the hetero atom said nitrogen atomalone or one additional hetero atom of nitrogen or oxygen, said phenyland heterocyclic ring substituents being C₁-C₆ alkyl or C₁-C₆ alkoxy,and each of said halogen or halo groups in this part (d) being fluoro orchloro.

With additional further reference to Formula (I), (e) each R₆ and R₇ isindependently chosen for each occurrence from aryl,mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkoxyaryl, mono(C₁-C₆)alkylaryl,di(C₁-C₆)alkylaryl, bromoaryl, chloroaryl, fluoroaryl, C₃-C₇cycloalkylaryl, C₃-C₇ cycloalkyl, C₃-C₇ cycloalkyloxy, C₃-C₇cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇ cycloalkyloxy(C₁-C₆)alkoxy,aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy, aryloxy, aryloxy(C₁-C₆)alkyl,aryloxy(C₁-C₆)alkoxy, mono- or di(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, diarylamino, N—(C₁-C₆)alkylpiperazino,N-arylpiperazino, aziridino, indolino, piperidino, arylpiperidino,morpholino, thiomorpholino, tetrahydroquinolino, tetrahydroisoquinolino,pyrryl, C₁-C₆ alkyl, C₁-C₆ bromoalkyl, C₁-C₆ chloroalkyl, C₁-C₆fluoroalkyl, C₁-C₆ alkoxy, mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy,methacryloxy, bromo, chloro or fluoro; and q is independently chosen foreach occurrence form the integer 0, 1, or 2.

With the fluoranthenoxazine represented by the following Formula (I),there is the proviso that at least one of and less than all of R₁, R₂independently for each q, R₃, R₄, R₅, R₆ independently for each q, andR₇ independently for each q, is in each case independently an L-Group asdefined further herein below.

With some embodiments, the photochromic material is chosen from (2) atleast one photochromic material chosen from at least one naphthopyranrepresented by the following Formula (II),

With reference to Formula (II), (a) R₁₂ is hydrogen or a C₁-C₆ alkyl;and (b) R₁₃ is hydrogen or the group, —C(O)J, J being —OR₁₅ or—N(R₁₀)R₁₁, wherein R₁₅ is hydrogen, allyl, C₁-C₆ alkyl, phenyl, C₁-C₆monoalkyl substituted phenyl, C₁-C₆ monoalkoxy substituted phenyl,phenyl(C₁-C₃)alkyl, C₁-C₆ monoalkyl substituted phenyl(C₁-C₃)alkyl,C₁-C₆ monoalkoxy substituted phenyl(C₁-C₃)alkyl, C₁-C₆alkoxy(C₂-C₄)alkyl, or C₁-C₆ monohaloalkyl, and wherein R₁₀ and R₁₁ arethe same as described hereinbefore in (1)(d), and said halo substituentbeing chloro or fluoro.

With further reference to Formula (II), (c) R₁₄ is —OR₉, —N(R₁₀)R₁₁,wherein R₉, R₁₀ and R₁₁ are the same as described hereinbefore in(1)(d), or the group, —C(O)V; wherein V is C₁-C₆ alkyl, phenyl, C₁-C₆mono- or C₁-C₆ di-alkyl substituted phenyl, C₁-C₆ mono- or C₁-C₆di-alkoxy substituted phenyl, C₁-C₆ alkoxy, phenoxy, C₁-C₆ mono- orC₁-C₆ di-alkyl substituted phenoxy, C₁-C₆ mono- or C₁-C₆ di-alkoxysubstituted phenoxy, C₁-C₆ alkylamino, phenylamino, C₁-C₆ mono- or C₁-C₆di-alkyl substituted phenylamino, or C₁-C₆ mono- or C₁-C₆ di-alkoxysubstituted phenylamino, and said halo substituent being chloro, fluoroor bromo, provided that either R₁₂ or R₁₃ is hydrogen.

With additional reference to Formula (II), (d) B and B′ are eachindependently chosen from the following (i) through (ix). With someembodiments, B and B′ of Formula (II) are each independently selectedfrom (i) mono-T-substituted phenyl, wherein the group T is representedby the formula,-G[(OC₂H₄)_(x)(OC₃H₆)_(y)(OC₄H₈)_(z)]G′—[(OC₂H₄)_(x)(OC₃H₈)_(y)(OC₄H)_(z)]G′wherein -G being chosen from —C(O)— or —CH₂—, G′ being chosen from C₁-C₃alkoxy or a polymerizable group, x, y and z each being independentlychosen from a number between 0 and 50, and the sum of x, y and z beingbetween 2 and 50.

With some additional embodiments, B and B′ of Formula (II) are eachindependently selected from (ii) an unsubstituted, mono-, di-, ortri-substituted aryl group, phenyl or naphthyl.

With some further embodiments, B and B′ of Formula (II) are eachindependently selected from (iii) 9-julolidinyl or the unsubstituted,mono- or di-substituted heteroaromatic group chosen from pyridylfuranyl, benzofuran-2-yl, benzofuran-3-yl, thienyl, benzothien-2-yl,benzothien-3-yl, dibenzofuranyl, dibenzothienyl, carbazoyl,benzopyridyl, indolinyl or fluorenyl, each of said aryl andheteroaromatic substituents in (ii) and (iii) being independently chosenfrom hydroxy, —C(O)U, wherein U being hydroxy, C₁-C₆ alkyl, C₁-C₆alkoxy, phenyl, mono-substituted phenyl, amino, mono(C₁-C₆)alkylamino,di-(C₁-C₆)alkylamino, morpholino, piperidino or pyrrolidyl; aryl,mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkoxyaryl, mono(C₁-C₆)alkylaryl,di(C₁-C₆)alkylaryl, chloroaryl, fluoroaryl, C₃-C₇ cycloalkylaryl, C₃-C₇cycloalkyl, C₃-C₇ cycloalkyloxy, C₃-C₇ cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇cycloalkyloxy(C₁-C₆)alkoxy, aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy,aryloxy, aryloxy(C₁-C₆)alkyl, aryloxy(C₁-C₆)alkoxy, mono- ordi-(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- ordi-(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi-(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi-(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, diarylamino, piperazino, N—(C₁-C₆)alkylpiperazino,N-arylpiperazino, aziridino, indolino, piperidino, morpholino,thiomorpholino, tetrahydroquinolino, tetrahydroisoquinolino, pyrrolidyl,C₁-C₆ alkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, C₁-C₆ alkoxy,mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy, methacryloxy, bromo, chloro orfluoro, said aryl being chosen from phenyl or naphthyl.

With some further embodiments, B and B′ of Formula (II) are eachindependently selected from (iv) an unsubstituted or mono-substitutedgroup chosen from pyrazolyl, imidazolyl, pyrazolinyl, imidazolinyl,pyrrolinyl, phenothiazinyl, phenoxazinyl, phenazinyl or acridinyl, eachof said substituents being independently chosen from C₁-C₆ alkyl, C₁-C₆alkoxy, phenyl, fluoro, chloro or bromo.

In accordance with some embodiments, B and B′ of Formula (II) are eachindependently selected from (v) a monosubstituted phenyl, said phenylhaving a substituent located at the para position being —(CH₂)_(r)— or—O—(CH₂)_(r)—, wherein r being chosen from the integer 1, 2, 3, 4, 5 or6, said substituent being connected to an aryl group which is a memberof another photochromic material.

In accordance with some further embodiments, B and B′ of Formula (II)are each independently selected from (vi) a group represented by one ofthe following formulas,

wherein A is independently chosen in each formula from methylene oroxygen and D being independently chosen in each formula from oxygen orsubstituted nitrogen, provided that when D is substituted nitrogen. A ismethylene; said nitrogen substituents being chosen from hydrogen, C₁-C₆alkyl, or C₂-C₆ acyl; each R₂₀ being independently chosen for eachoccurrence in each formula from C₁-C₆ alkyl, C₁-C₆ alkoxy, hydroxy,chloro or fluoro; R₁₈ and R₁₉ each being independently chosen in eachformula from hydrogen or C₁-C₆ alkyl; and q being chosen from theinteger 0, 1 or 2.

In accordance with some further embodiments, B and B′ of Formula (II)are each independently selected from (vii) C₁-C₆ alkyl, C₁-C₆chloroalkyl, C₁-C₆ fluoroalkyl, C₁-C₆ alkoxy(C₁-C₄)alkyl, C₃-C₆cycloalkyl, mono(C₁-C₆)alkoxy(C₃-C₆)cycloalkyl,mono(C₁-C₆)alkyl(C₃-C₆)-cycloalkyl, chloro(C₃-C₆)cycloalkyl,fluoro(C₃-C₆)cyclo-alkyl or C₄-C₁₂ bicycloalkyl.

In accordance with some additional embodiments, B and B′ of Formula (II)are each independently selected from (viii) a group represented by thefollowing formula,

wherein N is chosen from hydrogen or C₁-C₄ alkyl and M is chosen from anunsubstituted, mono-, or di-substituted group chosen from naphthyl,phenyl, furanyl, or thienyl; each of said group substituents beingindependently chosen from C₁-C₄ alkyl, C₁-C₄ alkoxy, fluoro, or chloro.

In accordance with some further additional embodiments, B and B′ ofFormula (II) are each independently selected from (ix) B and B′ takentogether form fluoren-9-ylidene, mono-, or di-substitutedfluoren-9-ylidene or a group being independently chosen from saturatedC₃-C₁₂ spiro-monocyclic hydrocarbon rings, saturated C₇-C₁₂spiro-bicyclic hydrocarbon rings or saturated C₇-C₁₂ spiro-tricyclichydrocarbon rings; each of said fluoren-9-ylidene substituents beingindependently chosen from C₁-C₄ alkyl, C₁-C₄ alkoxy, fluoro or chloro.

With the naphthopyran represented by the following Formula (II), thereis the proviso that at least one of and less than all of R₁₂, R₁₃, R₁₄,B, and B′ is in each case independently an L-Group as defined furtherherein below.

With some embodiments, the photochromic material is chosen from (3) atleast one photochromic material chosen from at least one naphthopyranrepresented by the following Formula (III),

With reference to Formula (III): (a) R₂₁ is the group, —C(O)W or CH₂Q,described hereinbefore in (1)(d), with regard to Formula (I); (b) R₂₂and each R₂₃ are independently chosen for each occurrence from hydroxyl,NH₂ or N(R)H, wherein R is C₁-C₆ alkyl or aryl and n is chosen from theintegers 0, 1, 2, or 3; and (c) B and B′ are each independently chosenfrom the groups (i)-(ix) described hereinbefore in (2)(d), with regardto Formula (II).

With the naphthopyran represented by the following Formula (III), thereis the proviso that at least one of and less than all of R₂₁, R₂₂, R₂₃independently for each n, B, and B′ is in each case independently anL-Group as defined further herein below.

With some embodiments, the photochromic material is chosen from (4) atleast one naphthopyran represented by the following Formula (IV),

With reference to Formula (IV), (a) R₅ is independently chosen from thegroups described hereinbefore in (1)(d); and (b) R₂₄ and R₂₅ are eachchosen from hydrogen or an amino group defined hereinafter with furtherreference to (i)-(v), provided that R₂₄ and R₂₅ are not both hydrogen.The amino groups from which R₂₄ and R₂₅ can each be independently choseninclude, with some embodiments, (i) —N(R₁₆)R₁₇, R₁₆ and R₁₇ each beingindependently chosen from hydrogen, C₁-C₈ alkyl, aryl, furanyl,benzofuran-2-yl, benzofuran-3-yl, thienyl, benzothien-2-yl,benzothien-3-yl, dibenzofuranyl, dibenzothienyl, benzopyridyl,fluorenyl, C₁-C₈ alkylaryl, C₃-C₂₀ cycloalkyl, C₄-C₂₀ bicycloalkyl,C₅-C₂₀ tricycloalkyl or C₁-C₂₀ alkoxyalkyl, in which the aryl group isphenyl or naphthyl.

The amino groups from which R₂₄ and R₂₅ can each be independently choseninclude, with some embodiments, (ii) a nitrogen containing ringrepresented by the following Formula (IVa),

With reference to Formula (IVa), each Y is independently chosen for eachoccurrence from —CH₂—, —CH(R₂₆)—, —C(R₂₆)(R₂₆)—, —CH(aryl)-, —C(aryl)₂-or —C(R₂₆)(aryl)-; X is —Y—, —O—, —S—, —S(O)—, —S(O₂)—, —NH—, —N(R₂₆)—or —N(aryl)-; R₂₆ is C₁-C₆ alkyl; the aryl group is phenyl or naphthyl,m is chosen from the integer 1, 2 or 3, and p is chosen from the integer0, 1, 2 or 3; provided that when p is 0, X is Y.

The amino groups from which R₂₄ and R₂₅ can each be independently choseninclude, with some embodiments, (iii) a group represented by one of thefollowing Formulas (IVb) and (IVc),

With reference to Formula (IVb) and (IVc), each R₂₈, R₂₉ and R₃₀ ischosen independently for each occurrence in each formula from hydrogen,C₁-C₅ alkyl, phenyl or naphthyl; or the groups R₂₈ and R₂₉ together forma ring of 5 to 8 carbon atoms; R₂₇ is chosen independently for eachoccurrence from C₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro or chloro, and q ischosen from the integer 0, 1 or 2.

The amino groups from which R₂₄ and R₂₅ can each be independently choseninclude, with some embodiments: (iv) unsubstituted, mono- ordi-substituted C₄-C₁₈ spirobicyclic amine; or (v) unsubstituted, mono-or di-substituted C₄-C₁₈ spirotricyclic amine; the substituents for (iv)and (v) being independently chosen for each occurrence from aryl, C₁-C₆alkyl, C₁₋₆ alkoxy or phenyl(C₁-C₆)alkyl.

With further reference to Formula (IV), (c) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d)with regard to Formula (II).

With the naphthopyran represented by the following Formula (IV), thereis the proviso that at least one of and less than all of R₅, R₂₄, R₂₅, Band B′ is in each case independently an L-Group as defined furtherherein below.

With some embodiments, the photochromic material is chosen from (5) atleast one phenanthropyran represented by at least one of the followingFormula (VA) and Formula (VB),

and

With reference to and independently for each of Formula (VA) and Formula(VB): (a) R₃₁ is the group R₅, described hereinbefore in (1)(d); (b) R₃₂is hydrogen, C₁-C₆ alkyl, C₁-C₆ alkoxy, C₃-C₇ cycloalkyl, pyridyl,phenyl, mono-substituted or di-substituted phenyl, said phenylsubstituents being C₁-C₆ alkyl, C₁-C₆ alkoxy, hydroxy, amino, chloro, orfluoro; (c) each R₃₃ is independently chosen for each occurrence fromchloro, fluoro, amino, C₁-C₆ monoalkylamino, —N(R₁₀)R₁₁, which wasdescribed hereinbefore in (1)(d), phenyl, C₁-C₆ alkyl, or —OR₃₄, whereinR₃₄ is hydrogen, C₁-C₆ alkyl, allyl, or acetyl, and q is the integer 0,1, or 2; and (d) B and B′ are each independently chosen from the groupsdescribed hereinbefore in (2)(d) with regard to Formula (II).

With the phenanthropyran represented by Formula (VA) and/or Formula (VB)there is the proviso that at least one of and less than all of R₃₁, R₃₂,R₃₃ independently for each q, B, and B′ is in each case independently anL-Group as defined further herein below.

With some embodiments, the photochromic material is chosen from (6) atleast one fluoranthenopyran represented by the following Formula (VI),

With reference to Formula (VI), (a) R₃₅ and R₃₆ are each independentlychosen for each occurrence (or each q) from hydroxy, aryl,mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkoxyaryl, mono(C₁-C₆)alkylaryl,di(C₁-C₆)alkylaryl, bromoaryl, chloroaryl, fluoroaryl, C₃-C₇cycloalkylaryl, C₃-C₇ cycloalkyl, C₃-C₇ cycloalkyloxy, C₃-C₇cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇ cycloalkyloxy(C₁-C₆)alkoxy,aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy, aryloxy, aryloxy(C₁-C₆)alkyl,aryloxy(C₁-C₆)alkoxy, mono- or di(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- anddi(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, C₁-C₆ alkyl, C₁-C₆ bromoalkyl, C₁-C₆chloroalkyl, C₁-C₆ fluoroalkyl, C₁-C₆ alkoxy,mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy, methacryloxy, bromo, chloro,fluoro, amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino,mono- or di-(C₁-C₆)alkyl substituted phenylamino or mono- ordi-(C₁-C₆)alkoxy substituted phenylamino, and q is the integer 0, 1 or2.

With further reference to Formula (VI): (b) R₅ is independently chosenfrom the groups described hereinbefore in (1)(1)(d); and (c) B and B′are each independently chosen from the groups described hereinbefore in(2)(d) with regard to Formula (II).

With the phenanthropyran represented by Formula (VI), there is theproviso that at least one of and less than all of R₅, R₃₅ independentlyfor each q, R₃₆ independently for each q, B, and B′ is in each caseindependently an L-Group as defined further herein below.

With some embodiments, the photochromic material is chosen from (7) atleast on naphthopyran represented by the following Formula (VII),

With reference to Formula (VII), (a) R₃₇ and R₃₈ together form an oxogroup or R₃₇ and R₃₈ each are independently chosen for each occurrencefrom hydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl, phenyl, mono- ordi-substituted phenyl, benzyl, mono-substituted benzyl, naphthyl, mono-or di-substituted naphthyl, C₄-C₁₂ bicycloalkyl, linear or branchedC₃-C₁₂ alkenyl, C₁-C₆ alkoxy carbonyl(C₁-C₆)alkyl,methacryloxy(C₁-C₆)alkyl, acryloxy(C₁-C₆)alkyl, C₁-C₄acyloxy(C₁-C₆)alkyl, C₁-C₆ alkoxy(C₁-C₆)alkyl or the unsubstituted,mono- or di-substituted heteroaromatic groups pyridyl, furanyl,benzofuran-2-yl, benzylfuran-3-yl, thienyl, benzothien-2-yl,benzothien-3-yl, dibenzofuranyl, dibenzothienyl, carbazolyl,benzopyridyl and indolyl, each of said phenyl, benzyl, naphthyl andheteroaromatic group substituents being C₁-C₆ alkyl, C₁-C₆ alkoxy,morpholino, di(C₁-C₆)alkylamino, chloro or fluoro.

With further reference to Formula (VII), (b) R₃₉ is chosen from C₁-C₆alkyl, C₁-C₆ alkoxy, chloro, fluoro, phenyl, mono- and di-substitutedphenyl, benzyl or mono-substituted benzyl, C₃-C₇ cycloalkyl, aryloxy,di(C₁-C₆)alkylamino, morpholino, thiomorpholino, piperidino, pyridyl,tetrahydroquinolino, isoquinolino, aziridino, diarylamino,N—(C₁-C₆)alkyl piperizino or N-aryl piperizino, wherein the aryl groupsare phenyl or naphthyl, each of said phenyl and benzyl substituentsbeing C₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro or chloro, and q is the integer0, 1 or 2.

With additional reference to Formula (VII), (c) I is oxygen or —N(R₄₀)—,wherein R₄₀ is hydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl, vinyl,C₁-C₅ acyl, phenyl, mono- or di-substituted phenyl, benzyl,mono-substituted benzyl, C₁-C₄ alkoxycarbonyl(C₁-C₆)alkyl,methacryloxy(C₁-C₆)alkyl, acryloyloxy(C₁-C₆)alkyl, phenyl(C₁-C₆)alkyl,naphthyl, C₄-C₁₂ bicycloalkyl, C₂-C₄ acyloxy or the unsubstituted orsubstituted heteroaromatic groups pyridyl, furanyl, benzofuran-2-yl,benzofuran-3-yl, thienyl, benzothien-2-yl, benzothien-3-yl,dibenzofuranyl, dibenzothienyl, carbazolyl, benzopyridyl or indolyl,each of the phenyl, benzyl and heteroaromatic group substituents isC₁-C₆ alkyl or C₁-C₆ alkoxy.

With further additional reference to Formula (VII): (d) K is oxygen,—N(R₄₀)— or —C(R₄₁)(R₄₂)—, wherein R₄₁ and R₄₂ are each hydrogen, C₁-C₆alkyl or C₃-C₇ cycloalkyl; and (e) B and B′ are each independentlychosen from the groups described hereinbefore in (2)(d) with regard toFormula (II).

With the naphthopyran represented by Formula (VII), there is the provisothat at least one of and less than all of R₃₇, R₃₈, R₃₉ independentlyfor each q, B, and B′ is in each case independently an L-Group asdefined further herein below.

In accordance with some embodiments, the photochromic material is chosenfrom (8) at least one naphthopyran represented by the following Formula(VIII),

With reference to Formula (VIII): (a) R₄₃ and R₄₄ together form an oxogroup or R₄₃ and R₄₄ are both hydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl,allyl, phenyl, mono-substituted phenyl, benzyl or mono-substitutedbenzyl each of said phenyl and benzyl group substituents being C₁-C₆alkyl or C₁-C₆ alkoxy; and (b) R₄₅ is hydrogen, C₁-C₆ alkyl, C₃-C₇cycloalkyl, or the group, CH(B)B′, wherein B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d).

With further reference to Formula (VIII): (c) R₄₆ is hydrogen, C₁-C₆alkyl, or C₃-C₇ cycloalkyl; (d) each R₄₇ is C₁-C₆ alkyl, C₁-C₆ alkoxy,chloro or fluoro, and q is the integer 0, 1, or 2; and (e) B and B′ areeach independently chosen from the groups described hereinbefore in(2)(d) with regard to Formula (II).

With the naphthopyran represented by Formula (Viii), there is theproviso that at least one of and less than all of R₄₃, R₄₄, R₄₅, R₄₈,R₄₇, B, and B′ is in each case independently an L-Group as definedfurther herein below.

With some embodiments, the photochromic material is chosen from (9) atleast one naphthopyran represented by the following Formulas (IXA),(IXB), (IXC), (IXD), (IXE), (IXF), (IXG) and (IXH),

With reference to and independently for each of Formulas (IXA), (IXB),(IXC), (IXD), (IXE), (IXF), (IXG) and (IXH): (a) R₄₃ and R₄₄ are in eachcase independently chosen from groups described hereinbefore in (8)(a)with regard to Formula (VIII); (b) R₄₇ in each case is independentlychosen from groups described hereinbefore in (8)(d) with regard toFormula (VIII), and q is in each case independently as describedhereinbefore in (8)(d) with regard to Formula (VIII); and (c) B and B′are each independently chosen from the groups described hereinbefore in(2)(d) with regard to Formula (II).

With and independently for each of the naphthopyran(s) represented byFormulas (IXA), (IXB), (IXC), (IXD), (IXE), (IXF), (IXG) and (IXH) thereis the proviso that at least one of and less than all of R₄₃, R₄₄,independently for each q, R₄₇ independently for each q, B, and B′ is ineach case independently an L-Group as defined further herein below.

With some embodiments, the photochromic material is chosen from (10) atleast one naphthopyran represented by the following Formulas (XA) and(XB),

With reference to and independently for each of Formulas (XA) and (XB),(a) Ring A′ is chosen from: (i) an unsubstituted, mono-substituted ordi-substituted heterocyclic ring chosen from benzothieno, benzofurano orindolo, the 2, 3 or 3, 2 positions of said heterocyclic ring being fusedto the i, j or k side of said naphthopyran represented by Formula (XA)or said heterocyclic ring is fused to the f side of said naphthopyranrepresented by Formula (XB); or (ii) an unsubstituted, mono-substitutedor di-substituted indeno group fused to the i, j or k side of saidnaphthopyran represented by Formula (XA) or to the f side of saidnaphthopyran represented by Formula (XB); each of said heterocyclic ringand indeno group substituents being C₁-C₆ alkyl, C₅-C₇ cycloalkyl, C₁-C₆alkoxy, —N(R₁₀)R₁₁, which was described hereinbefore in (1)(d), chloro,fluoro, benzo, mono- or di-substituted benzo group fused to the benzoportion of the benzothieno, benzofurano, indeno or indolo moiety, saidbenzo substitutent being C₁-C₆ alkyl, C₅-C₇ cycloalkyl, C₁-C₆ alkylmono-substituted (C₅-C₇)cycloalkyl, C₁-C₆ alkoxy, —N(R₁₀)R₁₁, which wasdescribed hereinbefore in (1)(d), chloro or fluoro.

With further reference to and independently for each of Formulas (XA)and (XB), (b) R₄₈ is chosen from: (i) —C(O)W′, W′ being —OR₉ or—N(R₁₀)R₁₁, wherein said groups were described hereinbefore in (1)(d)with regard to Formula (I); or (ii) —C(R₅₁)₂X′, wherein X′ is —CN,chloro, fluoro, hydroxy, benzoyloxy, C₁-C₆ alkoxy, C₂-C₆ acyloxy, amino,C₁-C₆ mono-alkylamino, C₁-C₆ dialkylamino, morpholino, piperidino,1-indolinyl, pyrrolidyl, or trimethylsilyloxy, R₅₁ is hydrogen, C₁-C₆alkyl, phenyl or naphthyl, and each of said phenyl and heterocyclic ringsubstituents in this part (b)(i) and (ii) being C₁-C₆ alkyl or C₁-C₆alkoxy.

With further reference to and independently for each of Formulas (XA)and (XB): (c) R₄₉ is hydrogen, C₁-C₆ alkyl, the mono-, di- ortri-substituted aryl groups phenyl or naphthyl, said aryl substituentsbeing C₁-C₆ alkyl, C₁-C₆ alkoxy, chloro or fluoro; (d) each R₅₀ ischloro, fluoro, C₁-C₆ alkyl, C₁-C₆ alkoxy, phenyl, naphthyl, phenoxy,naphthoxy or the group, —N(R₁₀)R₁₁, described hereinbefore in (1)(d)with regard to Formula (I), and q is selected from the integers 0, 1 or2 in said naphthopyran represented by Formula (XA), or each R₅₀ ischloro, fluoro, phenoxy, naphthoxy or the group, —N(R₁₀)R₁₁, and p isselected from the integers 0, 1, 2 or 3 in said naphthopyran representedby Formula (XB); and (e) B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d) with regard to Formula (II).

With and independently for each of the naphthopyran(s) represented byFormulas (XA) and (XB) there is the proviso that at least one of andless than all of R₄₈, R₄₉, R₅₀ independently for each q and each p, B,and B′ is in each case independently an L-Group as defined furtherherein below.

With some embodiments, the photochromic material is chosen from (11) atleast one indenonaphthopyran represented by the following Formulas (XIA)and (XIB),

With reference to and independently for each of Formula (XIA) andFormula (XIB), (a) Ring A″ is an unsubstituted, mono-substituted ordi-substituted heterocyclic ring chosen from furo, thieno, benzothieno,benzofurano or indolo, the 2, 3 or 3, 2 positions of said heterocyclicring being fused to the g, h or i side of Formula (XIB) or to the n, oor p side of Formula (XIA), said heterocyclic ring substituents beingC₁-C₆ alkyl, C₅-C₇ cycloalkyl, C₁-C₆ alkoxy, chloro or fluoro.

With further reference to and independently for each of Formula (XIA)and Formula (XIB), (b) R₅₂ and R₅₃ together form an oxo group, a spiroheterocyclic group having 2 oxygen atoms and from 3 to 6 carbon atomsincluding the spirocarbon atom, or R₅₂ and R₅₃ are each hydrogen,hydroxy, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl, phenyl, mono-substitutedphenyl, benzyl, mono-substituted benzyl, chloro, fluoro or the group,—C(O)W″, wherein each W″ is hydroxy, C₁-C₆ alkyl, C₁-C₆ alkoxy, phenyl,mono-substituted phenyl, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, morpholino, piperidino or pyrrolidyl; or R₅₂ andR₅₃ are each the group, the group, —N(R₁₀)R₁₁, described hereinbefore in(1)(d), or —OR₅₄, wherein each R₅₄ is C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxysubstituted phenyl(C₁-C₃)alkyl, C₁-C₆ alkoxy(C₂-C₄)alkyl, C₃-C₇cycloalkyl, mono(C₁-C₄)alkyl substituted C₃-C₇ cycloalkyl, C₁-C₆chloroalkyl, C₁-C₆ fluoroalkyl, allyl, the group, —CH(R₅₅)X″, whereineach R₅₅ is hydrogen or C₁-C₃ alkyl, each X″ is —CN, —CF₃, or —COOR₅₅,or each R₅₄ is the group, —C(O)Y′, wherein each Y′ is hydrogen, C₁-C₆alkyl, C₁-C₆ alkoxy, the unsubstituted, mono- or di-substituted arylgroups, phenyl or naphthyl, phenoxy, mono- or di-(C₁-C₆)alkylsubstituted phenoxy, mono- or di-(C₁-C₆)alkoxy substituted phenoxy,amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino or mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, each of said phenyl, benzyl or aryl groupsubstituents being C₁-C₆ alkyl or C₁-C₆ alkoxy.

With additional reference to and independently for each of Formula (XIA)and Formula (XIB), (c) R₄₇ in each case is independently chosen fromgroups described hereinbefore in (8)(d) with regard to Formula (VIII),and q is in each case independently as described hereinbefore in (8)(d)with regard to Formula (VIII); and (d) B and B′ are each independentlychosen from the groups described hereinbefore in (2)(d) with regard toFormula (II).

With and independently for each of the indenonaphthopyrans representedby Formula (XIA) and Formula (XIB) there is the proviso that at leastone of and less than all of R₄₇ independently for each q, R₅₂, R₅₃, B,and B′ is in each case independently an L-Group as defined furtherherein below.

With some embodiments, the photochromic material is chosen from (12) atleast one indenonaphthopyran represented by the following Formulas(XIIA) and (XIIB),

With reference to and independently for each of Formula (XIIA) andFormula (XIIB), (a) Ring A″ is independently as described hereinbeforein (11)(a) with regard to Formulas (XIA) and (XIB), wherein Ring A″ isfused to the g, h or i side of Formula (XIIB) or to the n, o or p sideof Formula (XIIA).

With further reference to and independently for each of Formula (XIIA)and Formula (XIIB): (b) R₅₆ is hydrogen, hydroxy, bromo, fluoro orchloro and R₅₇ is the group, —CH(V′)₂, wherein V′ is —CN or —COOR₅₈, andeach R₅₈ is hydrogen, C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkylsubstituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substitutedphenyl(C₁-C₃)alkyl or the unsubstituted, mono- or di-substituted arylgroups phenyl or naphthyl, or R₅₇ is the group, —CH(R₅₉)Y″, wherein R₅₉is hydrogen, C₁-C₆ alkyl or the unsubstituted, mono- or di-substitutedaryl groups phenyl or naphthyl, and Y″ is —COOR₅₈, —COR₅₉, or —CH₂OR₆₀,wherein R₅₉ is hydrogen, C₁-C₆ alkyl, the unsubstituted, mono- ordi-substituted aryl groups phenyl or naphthyl, amino,mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino, mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, diphenylamino, mono- or di-(C₁-C₆)alkylsubstituted diphenylamino, mono- or di-(C₁-C₆)alkoxy substituteddiphenylamino, morpholino, or piperidino; R₆₀ is hydrogen, —COR₅₈, C₁-C₆alkyl, C₁-C₃ alkoxy(C₁-C₆)alkyl, phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkylsubstituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substitutedphenyl(C₁-C₃)alkyl, or the unsubstituted, mono- or di-substituted arylgroups phenyl or naphthyl, each of said aryl group substituents beingC₁-C₆ alkyl or C₁-C₆ alkoxy; or (c) R₅₆ and R₅₇ together form the group,═C(V′)₂ or ═C(R₅₉)W′″, wherein W′″ is —COOR₅₈ or —COR₅₉.

With additional reference to and independently for each of Formula(XIIA) and Formula (XIIB): (d) R₄₇ in each case is independently chosenfrom groups described hereinbefore in (8)(d) with regard to Formula(VIII), and q is in each case independently as described hereinbefore in(8)(d) with regard to Formula (VIII); and (e) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d)with regard to Formula (II).

With and independently for each of the indenonaphthopyrans representedby Formula (XIIA) and Formula (XIIB) there is the proviso that at leastone of and less than all of R₄₇ independently for each q, R₅₆, R₅₇, B,and B′ is in each case independently an L-Group as defined furtherherein below.

With some embodiments, the photochromic material is chosen from (13) atleast one indenonaphthopyran represented by the following Formula(XIII),

With reference to Formula (XIII), (a) R₆₁′ is independently chosen foreach occurrence from: (i) C₁-C₆ alkyl or C₁-C₆ alkoxy, perfluoroalkyl,halogen, cyano, ester; (ii) —SR₆₇, where R₆₇ is chosen from C₁-C₆ alkyl,aryl, mono- or di-substituted aryl, said aryl group being phenyl ornaphthyl and each of said aryl substitutents being chosen independentlyfrom C₁-C₆ alkyl, C₁-C₆ alkoxy or halogen; and (iii) an amino groupdescribed hereinbefore in (4)(b)(i), (ii), (iii), (iv) or (v) withregard to Formula (IV) where q is chosen from the integer 0, 1, 2 or 3.

With further reference to Formula (XIII), (b) R₆₁ is chosen from C₁-C₆alkyl or C₁-C₆ alkoxy, perfluoroalkyl and halogen

With additional reference to Formula (XIII), (c) R₆₂ and R₆₃ are eachindependently chosen from the following (i) through (viii):

(i) hydrogen, hydroxy, amino, mono- or di-substituted amino, C₁-C₁₂alkyl, C₃-C₁₂ alkylidene, C₂-C₁₂ alkylidyne, vinyl, C₃-C₇ cycloalkyl,C₁-C₆ alkoxyalkyl, allyl, benzyl, mono-substituted benzyl, chloro,fluoro or —C(O)W″, wherein W′″ being the same group describedhereinbefore in (11)(b); said amino substituents in (c)(i) being C₁-C₆alkyl, phenyl, benzyl or naphthyl; each of said benzyl substituentsbeing C₁-C₆ alkyl or C₁-C₆ alkoxy;

(ii) an unsubstituted, mono- di- or tri-substituted group chosen fromphenyl, naphthyl, phenanthryl, pyrenyl, quinolyl, isoquinolyl,benzofuranyl, thienyl, benzothienyl, dibenzofuranyl, dibenzothienyl,carbazolyl or indolyl; each of said group substituents in (c)(ii) beingchosen independently for each occurrence from chloro, fluoro, C₁-C₆alkyl or C₁-C₆ alkoxy;

(iii) a monosubstituted phenyl, said phenyl having a substituent locatedat the para position being as described hereinbefore in (2)(d)(v);

(iv) —OR₆₇, R₆₇ being chosen from C₁-C₆ alkyl, C₁-C₆ acyl,phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl, C₁-C₆alkoxy(C₂-C₄)alkyl, C₃-C₇ cycloalkyl, mono(C₁-C₄)alkyl substituted C₃-C₇cycloalkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, allyl, triarylsilyl,triarylsilyloxy, tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy,tri(C₁-C₆)alkoxysilyl, tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆alkoxy)silyl, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy,benzoyl, mono-substituted benzoyl, naphthoyl or mono-substitutednaphthoyl; each of said benzoyl and naphthoyl substituents beingindependently chosen from C₁-C₆ alkyl or C₁-C₆ alkoxy; or R₆₇ being—CH(R₆₈)Q″, wherein R₆₈ being chosen from hydrogen or C₁-C₃ alkyl and Q″being chosen from —CN, —CF₃, or —COOR₆₈; or R₆₇ being —C(O)V″, whereinV′ being chosen from hydrogen, C₁-C₆ alkoxy, phenoxy, mono- ordi-(C₁-C₆)alkyl substituted phenoxy, mono- or di-(C₁-C₆)alkoxysubstituted phenoxy, an unsubstituted, mono- or di-substituted arylgroup, phenyl or naphthyl, amino, mono(C₁-C₆)alkyl amino,di(C₁-C₆)alkylamino, phenylamino, mono- or di-(C₁-C₆)alkyl substitutedphenylamino, or mono- or di-(C₁-C₆)alkoxy substituted phenylamino; eachof said aryl group substituents being independently chosen from C₁-C₆alkyl or C₁-C₆ alkoxy;

(v) —CH(Q′″)₂, Q′″ being chosen from —CN or —COOR₆₉ and R₆₉ being chosenfrom hydrogen, C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkylsubstituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substitutedphenyl(C₁-C₃)alkyl or an unsubstituted, mono- or di-substituted arylgroup, phenyl or naphthyl; each of said aryl group substituents beingindependently chosen from C₁-C₆ alkyl or C₁-C₆ alkoxy;

(vi) —CH(R₇₀)G″, R₇₀ being chosen from hydrogen, C₁-C₆ alkyl or anunsubstituted, mono- or di-substituted aryl group, phenyl or naphthyl,and G″ being chosen from —COOR₆₉, —COR₇₁ or —CH₂OR₇₂, wherein R₇₁ beingchosen from hydrogen, C₁-C₆ alkyl, an unsubstituted, mono- ordi-substituted aryl group, phenyl or naphthyl, amino,mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino, mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, diphenylamino, mono- or di(C₁-C₆)alkylsubstituted diphenylamino, mono- or di(C₁-C₆)alkoxy substituteddiphenylamino, morpholino or piperidino; R₇₂ being chosen from hydrogen,—C(O)R₆₉, C₁-C₆ alkyl, C₁-C₃ alkoxy(C₁-C₆)alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl or an unsubstituted,mono- or di-substituted aryl group, phenyl or naphthyl, each of saidaryl group substituents being independently chosen from C₁-C₆ alkyl orC₁-C₆ alkoxy;

(vii) the group T being the same as described hereinbefore in (2)(d)(i)with regard to Formula (II); or

(viii) R₆₂ and R₆₃ together form an oxo group or a substituted orunsubstituted spiro-carbocyclic ring containing 3 to 6 carbon atoms or asubstituted or unsubstituted spiro-heterocyclic group containing 1 or 2oxygen atoms and 3 to 6 carbon atoms including the spirocarbon atom,said spiro-carbocyclic ring and spiro-heterocyclic group beingannellated with 0, 1 or 2 benzene rings, said substituents beinghydrogen or C₁-C₆ alkyl.

With additional further reference to Formula (XIII), (d) R₆₄ is chosenfrom hydrogen, C₁-C₆ alkyl, aryl, perfluoroalkyl, halogen or the groupR_(a) chosen from: (i) —OR₇₃, R₇₃ being chosen from phenyl(C₁-C₃)alkyl,C₁-C₆ alkyl, mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl, C₁-C₆alkoxy(C₂-C₄)alkyl, C₃-C₇ cycloalkyl, mono(C₁-C₄)alkyl substituted C₃-C₇cycloalkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, allyl or —CH(R₆₈)Q″described in (c)(i); or (ii) an amino group as described hereinbefore in(4)(b)(i), (ii), (iii), (iv) or (v) with regard to Formula (IV).

With further reference to Formula (XIII), (e) R₆₅ is chosen fromhydrogen, C₁-C₆ alkyl, aryl, perfluoroalkyl, halogen or R_(a), whereR_(a) is the same as described hereinbefore in (d). With someembodiments, R₆₅ is selected from an amino group as describedhereinbefore in (4)(b)(i), (ii), (iii), (iv) or (v) with regard toFormula (IV).

With additional reference to Formula (XIII): (f) R₆₆ is chosen fromhydrogen, C₁-C₆ alkyl or R_(a), where R_(a) is as described hereinbeforein (d); or (g) R₆₅ and R₆₆ together form one of the following Formulas(XIV-1) and (XIV-2),

With reference to and independently for each of Formulas (XIII-1) and(XIII-2), J′ and K′ are independently chosen for each occurrence in eachformula from oxygen or —N(R₁₅)—, where R₁₅ is as described hereinbeforein (2)(b), R₁₈ and R₁₉ each being as described hereinbefore in(2)(d)(vi).

With additional reference to Formula (XIII), B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d)with regard to Formula (II).

With the indenonaphthopyran represented by Formula (XIII) there is theproviso that at least one of and less than all of R₆₁, R_(61′)independently for each q, R₆₂, R₆₃, R₆₄, R₆₅, R₆₆, B, and B′ is in eachcase independently an L-Group as defined in further detail herein below.

With some embodiments, the photochromic material is chosen from (14) atleast one indenonaphthopyran represented by the following Formula (XIV),

With reference to Formula (XIV), (a) R₇₄ and R₇₅ are each independentlyas described hereinbefore with regard to R₆₂ and R₆₃ in (13)(c) withregard to Formula (XIII).

With further reference to Formula (XIV), (b) each R₇₆ is independentlychosen for each occurrence from di(C₁-C₆)alkylamino, dicyclohexylamino,diphenylamino, piperidyl, morpholinyl, pyridyl, a group T, describedhereinbefore in (2)(d)(i) with regard to Formula (II), or group —C(O)W″described hereinbefore in (11)(b) with regard to Formulas (XIA) and(XIB) and q is the integer 0, 1, or 2; or when q is 2, and the R₇₆substituents are adjacent, each pair of substituents independently formsa substituted or unsubstituted fused carbocyclic or heterocyclic ringchosen from benzo, pyridino, pyrazino, pyrimidino, furano,dihydrofurano, 1,3-dioxolo, 1,4-dioxolo, 1,3-dioxino, 1,4-dioxino,thiopheno, benzofuro, benzothieno, indolo, or indeno, the substituentsof said fused carbocyclic or heterocyclic ring being chosen fromhalogen, C₁-C₆ alkyl, C₁-C₆ alkoxy, amino, mono- or di-substitutedamino, said amino substituents being chosen from C₁-C₆ alkyl, phenyl,benzyl or naphthyl; the first R₇₆ ring being fused to the o, p or q sideand said second R₇₆ ring being fused to the g, h, or side of theindenonaphthopyran represented by Formula (XIV).

With additional reference to Formula (XIV), (c) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d)with regard to Formula (II).

With the indenonaphthopyran represented by Formula (XIV) there is theproviso that at least one of and less than all of R₇₄, R₇₅ independentlyfor each q, R₇₆ independently for each q, B, and B′ is in each caseindependently an L-Group as defined in further detail herein below.

The L-Group of the of the photochromic compounds (1) through (14) andeach related Formula thereof is in each case a chiral or achirallengthening group represented by the following Formula (XV),—(S₁)_(c)-(Q₁-(S₂)_(d))_(d′)-(Q₂-(S₃)_(e))_(e′)-(Q₃-(S₄)_(f))_(f′)—S₅—P  (XV)

With reference to Formula (XV), (i) Q₁, Q₂, and Q₃ are eachindependently for each occurrence a divalent group chosen from, anunsubstituted or a substituted aromatic group, an unsubstituted or asubstituted alicyclic group, and an unsubstituted or a substitutedheterocyclic group, wherein each substituent is independently chosenfrom, a group represented by P, liquid crystal mesogens, halogen,poly(C₁-C₁₈ alkoxy), C₁-C₁₈ alkoxycarbonyl, C₁-C₁₈ alkylcarbonyl, C₁-C₁₈alkoxycarbonyloxy, aryloxycarbonyloxy, perfluoro(C₁-C₁₈)alkoxy,perfluoro(C₁-C₁₈)alkoxycarbonyl, perfluoro(C₁-C₁₈)alkylcarbonyl,perfluoro(C₁-C₁₈)alkylamino, di-(perfluoro(C₁-C₁₈)alkyl)amino,perfluoro(C₁-C₁₈)alkylthio, C₁-C₁₈ alkylthio, C₁-C₁₈ acetyl, C₃-C₁₀cycloalkyl, C₃-C₁₀ cycloalkoxy, a straight-chain or branched C₁-C₁₈alkyl group that is mono-substituted with cyano, halo, or C₁-C₁₈ alkoxy,or poly-substituted with halo, and a group comprising one of thefollowing formulae: -M(T)_((t-1)) and -M(OT)_((t-1)), wherein M ischosen from aluminum, antimony, tantalum, titanium, zirconium andsilicon, T is chosen from organofunctional radicals, organofunctionalhydrocarbon radicals, aliphatic hydrocarbon radicals and aromatichydrocarbon radicals, and t is the valence of M.

With further reference to Formula (XV), (ii) c, d, e, and f are eachindependently an integer selected from 0 to 20, inclusive. Withadditional reference to formula (XV), S₁, S₂, S₃, S₄, and S₅ are eachindependently for each occurrence a spacer unit chosen from thefollowing (1), (2), and (3): (1) —(CH₂)_(g)—, —(CF₂)_(h)—,—Si(Z)₂(CH₂)_(g)—, —(Si(CH₃)₂O)_(h)—, wherein Z is independently chosenfor each occurrence from hydrogen, C₁-C₁₈ alkyl, C₃-C₁₀ cycloalkyl andaryl; g is independently chosen for each occurrence from 1 to 20; h is awhole number from 1 to 16 inclusive; (2) —N(Z)—, —C(Z)═C(Z)—, —C(Z)═N—,—C(Z′)—C(Z′)— or a single bond, wherein Z is independently chosen foreach occurrence from hydrogen, C₁-C₁₈ alkyl, C₃-C₁₀ cycloalkyl and aryl,and Z′ is independently chosen for each occurrence from C₁-C₁₈ alkyl,C₃-C₁₀ cycloalkyl and aryl; and (3) —O—, —C(O)—, —C≡C—, —N═N—, —S—,—S(O)—, —S(O)(O)—, —(O)S(O)—, —(O)S(O)O—, —O(O)S(O)O—, or straight-chainor branched C₁-C₂₄ alkylene residue, said C₁-C₂₄ alkylene residue beingunsubstituted, mono-substituted by cyano or halo, or poly-substituted byhalo.

With additional reference to the spacer units S₁, S₂, S₃, S₄, and S₅ ofFormula (XV), there is the proviso when two spacer units comprisingheteroatoms are linked together the spacer units are linked so thatheteroatoms are not directly linked to each other

With further reference to the spacer units S₁, S₂, S₃, S₄, and S₅ ofFormula (XV), there is the proviso that when S₁ is linked to thephotochromic material (such as photochromic materials (1) through (14)and each related Formula thereof) and S₅ is linked to P, S₁ and S₅ areeach linked so that two heteroatoms are not directly linked to eachother.

With additional reference to Formula (XV), (iii) P is chosen from:hydroxy, amino, C₂-C₁₈ alkenyl, C₂-C₁₈ alkynyl, azido, silyl, siloxy,silylhydride, (tetrahydro-2H-pyran-2-yl)oxy, thio, isocyanato,thioisocyanato, acryloyloxy, methacryloyloxy,2-(acryloyloxy)ethylcarbamyl, 2-(methacryloyloxy)ethylcarbamyl,aziridinyl, allyloxycarbonyloxy, epoxy, carboxylic acid, carboxylicester, acryloylamino, methacryloylamino, aminocarbonyl, C₁-C₁₈ alkylaminocarbonyl, aminocarbonyl(C₁-C₁₈)alkyl, C₁-C₁₈ alkyloxycarbonyloxy,halocarbonyl, hydrogen, aryl, hydroxy(C₁-C₁₈)alkyl, C₁-C₁₈ alkyl, C₁-C₁₈alkoxy, amino(C₁-C₁₈)alkyl, C₁-C₈ alkylamino, di-(C₁-C₁₈)alkylamino,C₁-C₁₈ alkyl(C₁-C₁₈)alkoxy, C₁-C₁₈ alkoxy(C₁-C₁₈)alkoxy, nitro,poly(C₁-C₁₈)alkyl ether, (C₁-C₁₈)alkyl(C₁-C₁₈)alkoxy(C₁-C₁₈)alkyl,polyethyleneoxy, polypropyleneoxy, ethylenyl, acryloyl,acryloyloxy(C₁-C₁₈)alkyl, methacryloyl, methacryloyloxy(C₁-C₁₈)alkyl,2-chloroacryloyl, 2-phenylacryloyl, acryloyloxyphenyl,2-chloroacryloylamino, 2-phenylacryloylaminocarbonyl, oxetanyl,glycidyl, cyano, isocyanato(C₁-C₁₈)alkyl, itaconic acid ester, vinylether, vinyl ester, a styrene derivative, main-chain and side-chainliquid crystal polymers, siloxane derivatives, ethyleneiminederivatives, maleic acid derivatives, fumaric acid derivatives,unsubstituted cinnamic acid derivatives, cinnamic acid derivatives thatare substituted with at least one of methyl, methoxy, cyano and halogen,or substituted or unsubstituted chiral or non-chiral monovalent ordivalent groups chosen from steroid radicals, terpenoid radicals,alkaloid radicals and mixtures thereof, wherein the substituents areindependently chosen from C₁-C₁₈ alkyl, C₁-C₁₈ alkoxy, amino, C₃-C₁₀cycloalkyl, C₁-C₁₈ alkyl(C₁-C₁₈)alkoxy, fluoro(C₁-C₁₈)alkyl, cyano,cyano(C₁-C₁₈)alkyl, cyano(C₁-C₁₈)alkoxy or mixtures thereof, or P is astructure having from 2 to 4 reactive groups, or P is an unsubstitutedor substituted ring opening metathesis polymerization precursor, or P isa substituted or unsubstituted photochromic compound.

With further additional reference to Formula (XV), (iv) d′, e′ and f areeach independently chosen from 0, 1, 2, 3, and 4, provided that a sum ofd′+e′+f′ is at least 2.

DETAILED DESCRIPTION

As used herein, the articles “a,” “an,” and “the” include pluralreferents unless otherwise expressly and unequivocally limited to onereferent.

Unless otherwise indicated, all ranges or ratios disclosed herein are tobe understood to encompass any and all subranges or subratios subsumedtherein. For example, a stated range or ratio of “1 to 10” should beconsidered to include any and all subranges between (and inclusive of)the minimum value of 1 and the maximum value of 10; that is, allsubranges or subratios beginning with a minimum value of 1 or more andending with a maximum value of 10 or less, such as but not limited to, 1to 6.1, 3.5 to 7.8, and 5.5 to 10.

As used herein, unless otherwise indicated, left-to-rightrepresentations of linking groups, such as divalent linking groups, areinclusive of other appropriate orientations, such as, but not limitedto, right-to-left orientations. For purposes of non-limitingillustration, the left-to-right representation of the divalent linkinggroup

or equivalently —C(O)O—, is inclusive of the right-to-leftrepresentation thereof,

or equivalently —O(O)C— or —OC(O)—.

Other than in the operating examples, or where otherwise indicated, allnumbers expressing quantities of ingredients, reaction conditions, andso forth used in the specification and claims are to be understood asmodified in all instances by the term “about.”

The photochromic materials and compounds of the photochromic articles ofthe present invention as described herein, including photochromicmaterials (1) through (14) and the related Formulas, and relatedphotochromic compounds, in each case optionally further include one ormore coproducts, resulting from the synthesis of such photochromicmaterials and compounds.

As used herein, the term “photochromic” and similar terms, such as“photochromic compound” means having an absorption spectrum for at leastvisible radiation that varies in response to absorption of at leastactinic radiation. Further, as used herein the term “photochromicmaterial” means any substance that is adapted to display photochromicproperties (such as, adapted to have an absorption spectrum for at leastvisible radiation that varies in response to absorption of at leastactinic radiation) and which includes at least one photochromiccompound.

As used herein, the term “actinic radiation” means electromagneticradiation that is capable of causing a response in a material, such as,but not limited to, transforming a photochromic material from one formor state to another as will be discussed in further detail herein.

As used herein, the term “photochromic material” includes thermallyreversible photochromic materials and compounds and non-thermallyreversible photochromic materials and compounds. The term “thermallyreversible photochromic compounds/materials” as used herein meanscompounds/materials capable of converting from a first state, forexample a “clear state,” to a second state, for example a “coloredstate,” in response to actinic radiation, and reverting back to thefirst state in response to thermal energy. The term “non-thermallyreversible photochromic compounds/materials” as used herein meanscompounds/materials capable of converting from a first state, forexample a “clear state,” to a second state, for example a “coloredstate,” in response to actinic radiation, and reverting back to thefirst state in response to actinic radiation of substantially the samewavelength(s) as the absorption(s) of the colored state (e.g.,discontinuing exposure to such actinic radiation).

As used herein to modify the term “state,” the terms “first” and“second” are not intended to refer to any particular order orchronology, but instead refer to two different conditions or properties.For purposes of non-limiting illustration, the first state and thesecond state of a photochromic compound can differ with respect to atleast one optical property, such as but not limited to the absorption ofvisible and/or UV radiation. Thus, according to various non-limitingembodiments disclosed herein, the photochromic compounds of the presentinvention can have a different absorption spectrum in each of the firstand second state. For example, while not limiting herein, a photochromiccompound of the present invention can be clear in the first state andcolored in the second state. Alternatively, a photochromic compound ofthe present invention can have a first color in the first state and asecond color in the second state.

As used herein the term “optical” means pertaining to or associated withlight and/or vision. For example, according to various non-limitingembodiments disclosed herein, the optical article or element or devicecan be chosen from ophthalmic articles, elements and devices, displayarticles, elements and devices, windows, mirrors, and active and passiveliquid crystal cell articles, elements and devices.

As used herein the term “ophthalmic” means pertaining to or associatedwith the eye and vision. Non-limiting examples of ophthalmic articles orelements include corrective and non-corrective lenses, including singlevision or multi-vision lenses, which can be either segmented ornon-segmented multi-vision lenses (such as, but not limited to, bifocallenses, trifocal lenses and progressive lenses), as well as otherelements used to correct, protect, or enhance (cosmetically orotherwise) vision, including without limitation, contact lenses,intra-ocular lenses, magnifying lenses, and protective lenses or visors.

As used herein the term “ophthalmic substrate” means lenses, partiallyformed lenses, and lens blanks.

As used herein the term “coating” means a supported film derived from aflowable composition, which can or can not have a uniform thickness, andspecifically excludes polymeric sheets. A layer that includes one ormore photochromic compounds of the present invention can, with someembodiments, be a photochromic coating.

As used herein the term “sheet” means a pre-formed film having agenerally uniform thickness and capable of self-support.

As used herein the term “connected to” means in direct contact with anobject or indirect contact with an object through one or more otherstructures or materials, at least one of which is in direct contact withthe object. For purposes of non-limiting illustration, a coatingcontaining one or more photochromic materials/compounds of the presentinvention, for example, can be in direct contact (e.g., abuttingcontact) with at least a portion of a substrate, such as an opticalarticle, or it can be in indirect contact with at least a portion of thesubstrate through one or more other interposed structures or materials,such as a monomolecular layer of a coupling or adhesive agent. Forexample, although not limiting herein, a coating containing one or morephotochromic materials/compounds of the present invention, can be incontact with one or more other interposed coatings, polymer sheets orcombinations thereof, at least one of which is in direct contact with atleast a portion of the substrate.

As used herein, the term “photosensitive material” means materials thatphysically or chemically respond to electromagnetic radiation,including, but not limited to, phosphorescent materials and fluorescentmaterials.

As used herein, the term “non-photosensitive materials” means materialsthat do not physically or chemically respond to electromagneticradiation, including, but not limited to, static dyes.

As used herein, molecular weight values of polymers, such as weightaverage molecular weights (Mw) and number average molecular weights(Mn), are determined by gel permeation chromatography using appropriatestandards, such as polystyrene standards.

As used herein, polydispersity index (PDI) values represent a ratio ofthe weight average molecular weight (Mw) to the number average molecularweight (Mn) of the polymer (i.e., Mw/Mn).

As used herein, the term “polymer” means homopolymers (e.g., preparedfrom a single monomer species), copolymers (e.g., prepared from at leasttwo monomer species), and graft polymers.

As used herein, the term “(meth)acrylate” and similar terms, such as“(meth)acrylic acid ester” means methacrylates and/or acrylates. As usedherein, the term “(meth)acrylic acid” means methacrylic acid and/oracrylic acid.

As used herein, spatial or directional terms, such as “left”, “right”,“inner”, “outer”, “above”, “below”, and the like, relate to theinvention as it is depicted in the drawing figures. However, it is to beunderstood that the invention can assume various alternativeorientations and, accordingly, such terms are not to be considered aslimiting.

As used herein, the terms “formed over,” “deposited over,” “providedover,” “applied over,” residing over,” or “positioned over,” meanformed, deposited, provided, applied, residing, or positioned on but notnecessarily in direct (or abutting) contact with the underlying element,or surface of the underlying element. For example, a layer “positionedover” a substrate does not preclude the presence of one or more otherlayers, coatings, or films of the same or different composition locatedbetween the positioned or formed layer and the substrate.

As used herein, the term “Ring Position” means a particular position inthe ring structure, such as the fused ring structure, of a chemicalcompound, such as the photochromic compounds/materials (b) and optionalphotochromic compounds (c) of the photochromic articles of the presentinvention, and which are depicted herein in accordance with someembodiments by numbers within the ring structures of representativechemical formulas.

All documents, such as but not limited to issued patents and patentapplications, referred to herein, and unless otherwise indicated, are tobe considered to be “incorporated by reference” in their entirety.

As used herein, recitations of “linear or branched” groups, such aslinear or branched alkyl, are herein understood to include: a methylenegroup or a methyl group; groups that are linear, such as linear C₂-C₂₀alkyl groups; and groups that are appropriately branched, such asbranched C₃-C₂₀ alkyl groups.

As used herein, recitations of “optionally substituted” group, means agroup, including but not limited to, alkyl group, cycloalkyl group,heterocycloalkyl group, aryl group, and/or heteroaryl group, in which atleast one hydrogen thereof has been optionally replaced or substitutedwith a group that is other than hydrogen, such as, but not limited to,halo groups (e.g., F, Cl, I, and Br), hydroxyl groups, ether groups,thiol groups, thio ether groups, carboxylic acid groups, carboxylic acidester groups, phosphoric acid groups, phosphoric acid ester groups,sulfonic acid groups, sulfonic acid ester groups, nitro groups, cyanogroups, hydrocarbyl groups (including, but not limited to: alkyl;alkenyl; alkynyl; cycloalkyl, including poly-fused-ring cycloalkyl andpolycyclocalkyl; heterocycloalkyl; aryl, including hydroxyl substitutedaryl, such as phenol, and including poly-fused-ring aryl; heteroaryl,including poly-fused-ring heteroaryl; and aralkyl groups), and aminegroups, such as —N(R¹¹)(R¹²) where R¹¹ and R¹² are each independentlyselected from hydrogen, linear or branched C₁-C₂₀ alkyl, C₃-C₁₂cycloakyl, C₃-C₁₂ heterocycloalkyl, aryl, and heteroaryl.

As used herein, recitations of “halo substituted” and related terms(such as, but not limited to, haloalkyl groups, haloalkenyl groups,haloalkynyl groups, haloaryl groups and halo-heteroaryl groups) means agroup in which at least one, and up to and including all of theavailable hydrogen groups thereof is substituted with a halo group. Theterm “halo-substituted” is inclusive of “perhalo-substituted.” As usedherein, the term perhalo-substituted group and related terms (such as,but not limited to perhaloalkyl groups, perhaloalkenyl groups,perhaloalkynyl groups, perhaloaryl groups and perhalo-heteroaryl groups)means a group in which all of the available hydrogen groups thereof issubstituted with a halo group. For example, perhalomethyl is —CX₃;perhalophenyl is —C₆X₅, where X represents one or more halo groups(e.g., F).

As used herein, the term “alkyl” means linear or branched alkyl, such asbut not limited to, linear or branched C₁-C₂₀ alkyl, or linear orbranched C₁-C₁₀ alkyl, or linear or branched C₂-C₁₀ alkyl. Examples ofalkyl groups from which the various alkyl groups of the presentinvention can be selected from, include, but are not limited to, methyl,ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl,pentyl, neopentyl, hexyl, heptyl, octyl, nonyl and decyl. Alkyl groupsof the various compounds of the present invention can, with someembodiments, include one or more unsaturated linkages selected from—CH═CH— groups and/or one or more —C≡C— groups, provided the alkyl groupis free of two or more conjugated unsaturated linkages. With someembodiments, the alkyl groups are free of unsaturated linkages, such as—CH═CH— groups and —C≡C— groups.

As used herein, the term “cycloalkyl” means groups that areappropriately cyclic, such as but not limited to, C₃-C₁₂ cycloalkyl(including, but not limited to, cyclic C₅-C₇ alkyl) groups. Examples ofcycloalkyl groups include, but are not limited to, cyclopropyl,cyclobutyl, cyclopentyl, cyclohexyl, and cyclooctyl. The term“cycloalkyl” as used herein also includes: bridged ring polycycloalkylgroups (or bridged ring polycyclic alkyl groups), such as but notlimited to, bicyclo[2.2.1]heptyl (or norbornyl) and bicyclo[2.2.2]octyl;and fused ring polycycloalkyl groups (or fused ring polycyclic alkylgroups), such as, but not limited to, octahydro-1H-indenyl, anddecahydronaphthalenyl.

As used herein, the term “heterocycloalkyl” means groups that areappropriately cyclic, such as but not limited to, C₃-C₁₂heterocycloalkyl groups or C₅-C₇ heterocycloalkyl groups, and which haveat least one hetero atom in the cyclic ring, such as, but not limitedto, O, S, N, P, and combinations thereof. Examples of heterocycloalkylgroups include, but are not limited to, imidazolyl, tetrahydrofuranyl,tetrahydropyranyl and piperidinyl. The term “heterocycloalkyl” as usedherein also includes: bridged ring polycyclic heterocycloalkyl groups,such as but not limited to, 7-oxabicyclo[2.2.1]heptanyl; and fused ringpolycyclic heterocycloalkyl groups, such as but not limited to,octahydrocyclopenta[b]pyranyl, and octahydro-1H-isochromenyl.

As used herein, the term “aryl” includes, but is not limited to, C₅-C₁₈aryl, such as but not limited to, C₅-C₁₀ aryl(including fused ringpolycyclic aryl groups). Examples of aryl groups include, but are notlimited to, phenyl, naphthyl, and anthracenyl.

As used herein, the term “heteroaryl,” includes but is not limited toC₅-C₁₈ heteroaryl, such as but not limited to C₅-C₁₀heteroaryl(including fused ring polycyclic heteroaryl groups) and meansan aryl group having at least one hetero atom in the aromatic ring, orin at least one aromatic ring in the case of a fused ring polycyclicheteroaryl group. Examples of heteroaryl groups include, but are notlimited to, furanyl, pyranyl, pyridinyl, isoquinoline, and pyrimidinyl.

As used herein, the term “fused ring polycyclic-aryl-alkyl group” andsimilar terms such as, fused ring polycyclic-alkyl-aryl group, fusedring polycyclo-aryl-alkyl group, and fused ring polycyclo-alkyl-arylgroup means a fused ring polycyclic group that includes at least onearyl ring and at least one cycloalkyl ring that are fused together toform a fused ring structure. For purposes of non-limiting illustration,examples of fused ring polycyclic-aryl-alkyl groups include, but are notlimited to indenyl, 9H-flourenyl, cyclopentanaphthenyl, and indacenyl.

As used herein, the term “aralkyl,” includes but is not limited toC₆-C₂₄ aralkyl, such as but not limited to C₆-C₁₀ aralkyl, means an arylgroup substituted with an alkyl group that is bonded (or linked) toanother group. Examples of aralkyl groups include, but are not limitedto, benzyl, and phenethyl.

The photochromic materials of the present invention can be referred toherein with regard to various groups at (or bonded to) various positionsof the photochromic materials. The positions are referred to herein,with some embodiments, with regard to the ring-positions as enumeratedin the representative Formulas of the photochromic materials asdescribed herein. For purposes of non-limiting illustration, with thefluoranthenoxazine represented by Formula (I): R₁ is at the 1′-position(or position 1′); R₂ is at one or two positions (depending on q)selected from the 4′-position, 5′-position, 6′-position, and/or7′-position (or positions 4′,5′,6′, and/or 7′); R₃ and R₄ are each atthe 3′-position (or position 3′); R₅ is at the 8-position (or position8); R₆ is at one or two positions (depending on q) selected from the9-position, 10-position, 11-position, and/or 12-position (or positions9, 10, 11, and/or 12); and R₇ is at one or two position (depending on q)selected from the 1-position, 2-position, and/or 3-position (orpositions 1, 2, and/or 3).

The Behind the Windshield Test and the Outdoor Test are described infurther detail in the Examples herein below. In summary, test samplescontaining behind the windshield (BWS) photochromic materials with orwithout other photochromic materials are tested for photochromicresponse (e.g., the change in optical density) with the simulatedwindshield in place under conditions simulating an eyeglass wearerbehind an automotive windshield exposure versus conditions simulatingoutdoor exposure in the Outdoor Test (OS). The retained optical densityis calculated by using the following formula:% ΔOD Retained=100×(ΔOD_(BWS)/ΔOD_(OS)).

The term “ΔOD” and equivalent recitations, such as “delta OD,” meanschange in optical density (OD) and is determined according to theformula:ΔOD=log (% Tb/% Ta)In the above formula, % Tb is the percent transmittance in the bleachedstate (or non-colored state), % Ta is the percent transmittance in theactivated state (or colored state) and the logarithm is to the base 10.Optical density measurements are with some embodiments per specificwavelength or photopic. A method of determining change in opticaldensity (ΔOD) is described in further detail herein in the examples.

As used herein, “percent fatigue” is determined by measuring thedifference between the change in optical density (ΔOD) of a test samplebefore and after exposing the test sample to accelerated weathering, andis quantified in accordance with the formula:% Fatigue=(ΔOD_(init)−ΔOD_(final))/ΔOD_(init)×100.

In accordance with some embodiments of the present invention, thephotochromic article is adapted to retain at least 20 percent of thedelta OD (ΔOD) (or coloration) measured in the Outdoor Test when testedin the Behind the Windshield Test. With some further embodiments, thephotochromic article is adapted t retain at least 25 percent of thedelta OD (ΔOD) (or coloration) measured in the Outdoor Test when testedin the Behind the Windshield Test. With some embodiments, thephotochromic article is adapted to retain less than or equal to 100percent of the delta OD (ΔOD) (or coloration) measured in the OutdoorTest when tested in the Behind the Windshield Test. The delta OD (ΔOD)of the photochromic articles of the present invention can range betweenany combination of the recited upper and lower values, inclusive of therecited values. With some embodiments, the photochromic article isadapted to retain from 20 percent to 100 percent, or from 20 percent to90 percent, or from 25 percent to 50 percent of the delta OD (ΔOD) (orcoloration) measured in the Outdoor Test when tested in the Behind theWindshield Test.

With some embodiments, the photochromic article of the present inventionis adapted to exhibit an unactivated state luminous transmittance ofgreater than 70 percent at 23° C., an activated state luminoustransmittance at saturation less than 30 percent when activated at 23°C. by simulated sunlight from a xenon arc lamp set at 6.7 Watts/meter²UVA and 50,000 lumens/meter², and an activated state luminoustransmittance at saturation less than 60 percent when activated at 28°C. by simulated sunlight from a xenon arc lamp through an UV blockingtransparency rendering an irradiance integrated between 380 and 420nanometers of 0.75 Watts/meter² and 1,700 lumens/meter².

With some further embodiments, the photochromic article is adapted toexhibit an unactivated state luminous transmittance of greater than 80percent at 23° C., an activated state luminous transmittance atsaturation less than 30 percent when activated at 23° C. by simulatedsunlight from a xenon arc lamp set at 6.7 Watts/meter² UVA and 50,000lumens/meter², and an activated state luminous transmittance atsaturation less than 40 percent when activated at 28° C. by simulatedsunlight from a xenon arc lamp through an UV blocking transparencyrendering an irradiance integrated between 380 and 420 nanometers of0.75 Watts/meter² and 1,700 lumens/meter².

In the aforementioned non-limiting embodiments, the photochromicarticles reach saturation within 15 to 30 minutes of exposure to thesimulated sunlight and/or simulated sunlight filtered by the UVradiation blocking transparency at 23° C. and 28° C. The term “activatedluminous state transmittance at saturation” means that the transmittanceof the photochromic article has reached a point where it will notsubstantially change due to continued exposure to simulated sunlight.Stated another way, the transmittance at saturation upon continuedexposure to activating radiation does not vary by more than 5 percent ofthe percent transmittance value.

The aforementioned unactivated state luminous transmittance at 23° C.can with some embodiments be less than or equal to 100 percent. Withsome embodiments, the unactivated state luminous transmittance at 23° C.ranges between any combination of the recited lower and upper values,inclusive of the recited values, such as but not limited to, from 70 to100 percent, or from 70.1 to 100 percent, or from 80 to 100 percent, orfrom 80.1 to 100 percent, or from 71 to 99 percent, or from 81 to 99percent, in each case inclusive of the recited values.

The activated state luminous transmittance at saturation when thephotochromic article is activated at 23° C. by simulated sunlight from axenon arc lamp set at 6.7 Watts/meter² UVA and 50,000 lumens/meter² canwith some embodiments be greater than or equal to 0 percent. With somefurther embodiments, when the photochromic article is activated at 23°C. by simulated sunlight from a xenon arc lamp set at 6.7 Watts/meter²UVA and 50,000 lumens/meter², the activated state luminous transmittanceat saturation at 23° C. ranges between any combination of the recitedlower and upper values, inclusive of the recited values, such as but notlimited to, from 0 to 30 percent, or from 0 to 29 percent, or from 10 to29 percent, or from 15 to 25 percent, in each case inclusive of therecited values.

The activated state luminous transmittance at saturation when thephotochromic article is activated at 28° C. by simulated sunlight from axenon arc lamp through an UV blocking transparency rendering anirradiance integrated between 380 and 420 nanometers of 0.75Watts/meter² and 1,700 lumens/meter² can with some embodiments begreater than or equal to 0 percent. With some further embodiments, whenthe photochromic article is activated at 28° C. by simulated sunlightfrom a xenon arc lamp through an UV blocking transparency rendering anirradiance integrated between 380 and 420 nanometers of 0.75Watts/meter² and 1,700 lumens/meter², the activated state luminoustransmittance at saturation when the photochromic article is activatedat 28° C. ranges between any combination of the recited lower and uppervalues, inclusive of the recited values, such as but not limited to,from 0 to 60 percent, or from 0 to less than 60 percent, or from 0 to59.9 percent, or from 0 to 40 percent, or from 0 to less than 40percent, or from 0 to 39.9 percent, or from 1 to 59 percent, or from 10to 50 percent, or from 15 to 40 percent, in each case inclusive of therecited values.

The photochromic materials used to adapt the photochromic article foractivation behind ultraviolet radiation blocking transparencies arereferred to herein, and in accordance with some embodiments, as Behindthe Windshield photochromic materials or BWS photochromic materials.

In accordance with some embodiments, the photochromic articles of thepresent invention are substantially free of ultraviolet absorbingmaterials in concentrations that would substantially inhibit theactivation of the photochromic materials by radiation below 380nanometers. With some further embodiments, the photochromic articles ofthe present invention do not contain ultraviolet absorbing materials inconcentrations that would prevent greater than 50 percent of theactivation of the photochromic materials, as measured by delta OD byradiation below 380 nanometers.

With some embodiments, the photochromic materials of the photochromicarticles of the present invention are adapted to change from anunactivated form to an activated form by exposure to radiationsubstantially in a wavelength range of from 380 to 450 nanometers, orfrom 380 to 410 nanometers, (inclusive of the recited values) whenmeasured over a range of from 380 to 700 nanometers.

The photochromic materials of the photochromic articles of the presentinvention, are described in further detail as follows.

In accordance with some embodiments, for the photochromic materialchosen from at least one fluoroanthenoxazine represented by Formula (I):(a) R₁ is chosen from C₁-C₈ alkyl, phen(C₁-C₄)alkyl,acrylyloxy(C₂-C₆)alkyl, methacryloyloxy(C₂-C₆)alkyl,carboxy(C₂-C₆)alkyl, tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy,tri(C₁-C₆)alkoxysilyl, tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆alkoxy)silyl, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl or di(C₁-C₆)alkoxy(C₁-C₆alkyl)silyloxy; (b) R₂ is chosen from C₁-C₅ alkyl, C₁-C₅ alkoxy, C₁-C₈alkoxycarbonyl, C₁-C₄ acyloxy, halo, C₁-C₄ monohaloalkyl or C₁-C₄polyhaloalkyl; said halo substituents being chloro or fluoro, and q is0, 1 or 2; and (c) R₃ and R₄ are each independently chosen from C₁-C₅alkyl, phenyl; or R₃ and R₄ taken together form a group chosen from acyclic ring of from 5 to 8 carbon atoms which includes the spiro carbonatom.

In accordance with some further embodiments, for the photochromicmaterial chosen from at least one fluoroanthenoxazine represented byFormula (I): (d) R₅ is chosen from —CH₂Q and —C(O)W, wherein Q ishalogen, hydroxy, C₁-C₆ alkoxy, tri(C₁-C₆)alkylsilyl,tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, or the group, —OCH(R₈)Z; W is thegroup, —OCH(R₈)Z, morpholino or piperidino; Z is —COOR₈, R₈ is C₁-C₆alkyl; or W is —OR₉ or —N(R₁₀)R₁₁, wherein R₉ is chosen from C₁-C₆ alkylor phenyl; and R₁₀ and R₁₁ are each independently chosen from hydrogen,C₁-C₆ alkyl, or R₁₀ and R₁₁ together with the nitrogen atom form aheterocyclic ring chosen from morpholino or piperidino; and each of saidhalogen or halo groups in this part (d) being fluoro or chloro; and (e)each R₆ and R₇ is independently chosen for each occurrence from aryl,mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkylamino, piperidino, morpholino,C₁-C₆ alkoxy, or fluoro; and q is independently chosen for eachoccurrence form the integer 0, 1, or 2.

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one fluoroanthenoxazine represented byFormula (I), there is the proviso that one or two of R₁, R₂independently for each q, R₃, R₄, R₅, R₆ independently for each q, andR₇ is in each case independently an L-Group as described further hereinbelow.

Photochromic materials represented by Formula (I) can, with someembodiments, be prepared in accordance with art-recognized methods, suchas but not limited to, methods disclosed in U.S. Pat. No. 5,808,063.

In accordance with some embodiments, for the photochromic materialchosen from at least one naphthopyran represented by Formula (II): (a)R₁₂ is hydrogen; (b) R₁₃ is hydrogen or the group, —C(O)J, J being —OR₁₅or —N(R₁₀)R₁₁, wherein R₁₅ is C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl, or C₁-C₆alkoxy(C₂-C₄)alkyl, R₁₀ and R₁₁ are the same as described hereinbeforein (1)(d); and (c) R₁₄ is hydrogen, C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl,C₁-C₆ alkoxy(C₂-C₄)alkyl, C₅-C₇ cycloalkyl, or the group, —C(O)V;wherein V is C₁-C₆ alkyl, C₁-C₆ alkoxy or C₁-C₆ alkylamino.

In accordance with some further embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(II), (d) B and B′ are each independently chosen from the following (i)through (viii): (i) an unsubstituted, mono-, di-, or tri-substitutedphenyl group; (ii) a mono-substituted heteroaromatic group chosen frombenzofuran-2-yl, benzothien-3-yl, dibenzofuranyl, or carbazoyl; each ofsaid phenyl and heteroaromatic substituents in (i) and (ii) beingindependently chosen from —C(O)U, wherein U being C₁-C₆ alkyl, C₁-C₆alkoxy, mono-(C₁-C₆)alkylamino, di-(C₁-C₆)alkylamino, morpholino, orpiperidino; or amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino,piperidino, morpholino or fluoro; (iii) an unsubstituted ormono-substituted phenothiazinyl, said substituents being C₁-C₆ alkyl orC₁-C₆ alkoxy; (iv) a monosubstituted phenyl, said phenyl having asubstituent located at the para position being —O—(CH₂)_(r)—, wherein rbeing chosen from the integer 3 or 6, said substituent being connectedto an aryl group which is a member of another photochromic material; (v)said group represented by one of the following Formulas,

wherein A is independently chosen in each formula from methylene oroxygen and D is independently chosen in each formula from oxygen orsubstituted nitrogen, provided that when D is substituted nitrogen, A ismethylene; said nitrogen substituents being C₁-C₆ alkyl; each R₂₀ beingindependently chosen for each occurrence in each formula from C₁-C₆alkyl or C₁-C₆ alkoxy: R₁₈ and R₁₉ each being independently chosen ineach formula from hydrogen or C₁-C₆ alkyl; and q being chosen from theinteger 0, 1 or 2; (vi) C₁-C₆ alkyl, C₃-C₆ cycloalkyl, or C₄-C₁₂bicycloalkyl; (vii) said group represented by the following Formula,

wherein N is hydrogen and M is an unsubstituted, mono-, ordi-substituted phenyl; each of said group substituents beingindependently chosen from C₁-C₄ alkoxy or fluoro; or (viii) B and B′taken together form fluoren-9-ylidene, mono-, or di-substitutedfluoren-9-ylidene or a saturated C₇-C₁₂ spiro-bicyclic hydrocarbonrings; each of said fluoren-9-ylidene substituents being fluoro.

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(II), there is the proviso that one or two of R₁₂, R₁₃, R₁₄, B, and B′is in each case independently an L-Group as defined below.

The photochromic materials represented by Formula (II) can with someembodiments be prepared by art-recognized methods, such as but notlimited to, those disclosed in U.S. Pat. Nos. 5,466,398, 5,578,252 and5,637,262.

In accordance with some embodiments, for the photochromic materialchosen from at least one naphthopyran represented by Formula (III): (a)R₂₁ is the group, —C(O)W or CH₂Q, described hereinbefore in (1)(d); (b)R₂₂ and each R₂₃ are independently chosen for each occurrence fromhydroxy, NH₂ or N(R)H; wherein R is C₁-C₃ alkyl or phenyl and n ischosen from the integers 0, 1 or 2; and (c) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(III), there is the proviso that one or two of R₂₁, R₂₂, R₂₃, B, and B′is in each case independently an L-Group as defined further hereinbelow.

The photochromic materials represented by Formula (III) can with someembodiments be produced by art-recognized methods known, such as but notlimited to those disclosed in U.S. Pat. Nos. 5,458,814; 5,573,712;5,650,098; and 5,651,923.

In accordance with some embodiments, for the photochromic materialchosen from at least one naphthopyran represented by Formula (IV), (a)R₅ is independently chosen from the groups described hereinbefore in(1)(d).

In accordance with some embodiments, for the photochromic materialchosen from at least one naphthopyran represented by Formula (IV), (b)R₂₄ and R₂₅ are each chosen from hydrogen or an amino group definedhereinafter, provided that R₂₄ and R₂₅ are not both hydrogen; the aminogroup being selected from (i) through (iii) as follows: (i) —N(R₁₆)R₁₇,R₁₆ and R₁₇ each being independently chosen from C₁-C₈ alkyl, aryl, orC₃-C₂₀ cycloalkyl; and said aryl group being phenyl or naphthyl; (ii) anitrogen containing ring represented by the following formula,

wherein each Y is independently chosen for each occurrence from —CH₂—, Xis —Y—, —O—, —S—, or —N(R₂₆)—; R₂₆ being C₁-C₆ alkyl; said aryl groupbeing phenyl or naphthyl, m is chosen from the integer 1, 2 or 3, and pis chosen from the integer 0, 1, 2 or 3; provided that when p is 0, X isY; or (iii) the group represented by one of the following Formulas,

wherein each R₂₈, R₂₉ and R₃₀ are chosen independently for eachoccurrence in each formula from hydrogen; R₂₇ is chosen independentlyfor each occurrence from C₁-C₆ alkyl, and q is chosen from the integer0, 1 or 2.

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(IV), (c) B and B′ are each independently chosen from the groupsdescribed hereinbefore in (2)(d) with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(IV), there is the proviso that one or two of R₅, R₂₄, and R₂₅, B, andB′ is in each case independently an L-Group as defined in further detailherein below.

The photochromic materials represented by Formula (IV) can with someembodiments be produced by art-recognized methods known, such as but notlimited to those disclosed in U.S. Pat. Nos. 6,248,264 and 6,348,604.

In accordance with some embodiments, for the photochromic materialchosen from at least one phenanthopyran represented by Formula (VA) andFormula (VB): (a) R₃₁ is R₅ described hereinbefore in (1)(d); (b) R₃₂ ishydrogen or C₁-C₆ alkyl; (c) each R₃₃ is independently chosen for eachoccurrence from —N(R₁₀)R₁₁, which was described hereinbefore in (1)(d),C₁-C₆ alkyl, or —OR₃₄, wherein R₃₄ is C₁-C₆ alkyl, and q is the integer0, 1, or 2; and (d) 8 and B′ are each independently chosen from thegroups described hereinbefore in (2)(d) with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one phenanthopyran represented by Formula(VA) and Formula (VB), there is the proviso that one or two of R₃₁, R₃₂,R₃₃, B, and B′ is in each case independently an L-Group as defined infurther detail herein below.

The photochromic materials represented by Formula (VA) and Formula (VB)can with some embodiments be produced by art-recognized methods known,such as but not limited to those disclosed in U.S. Pat. No. 5,514,817.

In accordance with some embodiments, for the photochromic materialchosen from at least one fluoranthenopyran represented by Formula (VI):(a) R₃₅ and R₃₆ are each independently chosen for each occurrence fromC₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, phenylamino, mono- or di-(C₁-C₆)alkyl substitutedphenylamino or mono- or di-(C₁-C₆)alkoxy substituted phenylamino, and qis the integer 0, 1 or 2; (b) R₅ is chosen from the group describedhereinbefore in (1)(d); and (c) B and B′ are each independently chosenfrom the groups described hereinbefore in (2)(d) with regard to Formula(II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one fluoranthenopyran represented byFormula (VI), there is the proviso that one or two of R₅, R₃₅, R₃₆, B,and B′ is in each case independently an L-Group as defined in furtherdetail herein below.

The photochromic materials represented by Formula (VI) can with someembodiments be produced by art-recognized methods known, such as but notlimited to those disclosed in U.S. Pat. No. 5,891,368.

In accordance with some embodiments, for the photochromic materialchosen from at least one naphthopyran represented by Formula (VII): (a)R₃₇ and R₃₈ together form an oxo group or R₃₇ and R₃₈ each areindependently chosen for each occurrence from hydrogen, C₁-C₆ alkyl,C₃-C₇ cycloalkyl, phenyl or methacryloxy(C₁-C₆)alkyl; (b) R₃₉ is chosenfrom C₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro, or morpholino, and q is theinteger 0, 1 or 2; (c) I is oxygen or —N(R₄₀)—, wherein R₄₀ is C₁-C₆alkyl, C₃-C₇ cycloalkyl or phenyl; (d) K is oxygen, —N(R₄₀)— or—C(R₄₁)(R₄₂)—, wherein R₄₁ and R₄₂ are each hydrogen or C₁-C₆ alkyl; and(e) B and B′ are each independently chosen from the groups describedhereinbefore in (2)(d) with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(VII), there is the proviso that one or two of R₃₇, R₃₈, R₃₉independently for each q, B, and B′ is in each case independently anL-Group as defined in further detail herein below.

The photochromic materials represented by Formula (VII) can with someembodiments be produced by art-recognized methods known, such as but notlimited to those disclosed in U.S. Pat. No. 6,022,497.

In accordance with some embodiments, for the photochromic materialchosen from at least one naphthopyran represented by Formula (VIII): (a)R₄₃ and R₄₄ together form an oxo group or R₄₃ and R₄₄ are both hydrogen,C₁-C₆ alkyl, C₃-C₇ cycloalkyl or phenyl; (b) R₄₅ is hydrogen or C₁-C₆alkyl; (c) R₄₆ is hydrogen or C₁-C₆ alkyl, C₃-C₇ cycloalkyl; (d) eachR₄₇ is C₁-C₆ alkyl, C₁-C₆ alkoxy or fluoro, and q is the integer 0, 1 or2; and (e) B and B′ are each independently chosen from the groupsdescribed hereinbefore in (2)(d) with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(VIII), there is the proviso that one or two of R₄₃, R₄₄, R₄₅, R₄₆, R₄₇independently for each q, B, and B′ is in each case independently saidL-Group as defined below.

The photochromic materials represented by Formula (VIII) can with someembodiments be produced by art-recognized methods known, such as but notlimited to those disclosed in U.S. Pat. No. 6,106,744.

In accordance with some embodiments, for the photochromic materialchosen from at least one naphthopyran represented by Formulas (IXA),(IXB), (IXC), (IXD), (IXE), (IXF), (IXG) and (IXH): (a) R₄₃ and R₄₄ arethe same groups described hereinbefore in (8)(a) with regard to Formula(VIII); (b) R₄₇ in each case is independently chosen from groupsdescribed hereinbefore in (8)(d) with regard to Formula (VIII), and q isin each case independently as described hereinbefore in (8)(d); and (c)B and B′ are each independently chosen from the groups describedhereinbefore in (2)(d) with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formulas(IXA), (IXB), (IXC), (IXD), (IXE), (IXF), (IXG) and (IXH), there is theproviso that one or two of R₃, R₄₄, R₄₇ independently for each q, B, andB′ is in each case independently an L-Group as defined in further detailherein below.

The photochromic materials represented by Formulas (IXA), (IXB), (IXC),(IXD), (IXE), (IXF), (IXG) and (IXH) can with some embodiments beproduced by art-recognized methods known, such as but not limited tothose disclosed in U.S. Pat. Nos. 6,022,495 and 6,149,841.

In accordance with some embodiments, for the photochromic materialchosen from at least one naphthopyran represented by Formula (XA) andFormula (XB), (a) Ring A′ is chosen from: (i) an unsubstituted, mono- ordi-substituted heterocyclic ring; or (ii) an unsubstituted, mono- ordi-substituted indeno group, each of said heterocyclic ring and indenogroup substituents being C₁-C₄ alkyl, C₁-C₃ alkoxy, —N(R₁₀)R₁₁, whichwas described hereinbefore in (1)(d), benzo, mono- or di-substitutedbenzo fused to the indeno moiety, said benzo substituents being C₁-C₃alkyl, C₁-C₃ alkoxy or —N(R₁₀)R₁₁.

In accordance with some further embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(XA) and Formula (XB), (b) R₄₈ is chosen from: (i) —C(O)W′, W′ being—OR₉ or —N(R₁₀)R₁₁, which groups are described hereinbefore in (1)(d);or (ii) —C(R₅₁)₂X′, wherein X′ is —CN, halogen, hydroxy, benzoyloxy,C₁-C₄ alkoxy, C₂-C₄ acyloxy, amino, C₁-C₄ mono-alkylamino, C₁-C₄dialkylamino, morpholino, piperidino, 1-indolinyl or pyrrolidyl, and R₅₁is hydrogen, C₁-C₄ alkyl, phenyl or naphthyl.

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(XA) and Formula (XB): (c) R₄₉ is hydrogen, C₁-C₄ alkyl, the mono- ordi-substituted aryl groups phenyl or naphthyl, said aryl substituentsbeing C₁-C₄ alkyl or C₁-C₄ alkoxy, chloro or fluoro; (d) each R₅₀ isfluoro, C₁-C₄ alkyl, C₁-C₄ alkoxy, phenyl, naphthyl, phenoxy, naphthoxy,or the group, —N(R₁₀)R₁₁, described hereinbefore in (1)(d), and q isselected from the integers 0, 1 or 2 for the naphthopyran represented byFormula (XA), or p is selected from the integers 0, 1, 2 or 3 for thenaphthopyran represented by Formula (XB); and (e) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d)with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one naphthopyran represented by Formula(XA) and Formula (XB), there is the proviso that one or two of R₄₈, R₄₉,R₅₀ independently for each q and independently for each p, B, and B′ isin each case independently an L-Group as defined in further detailherein below.

The photochromic materials represented by Formula (XA) and Formula (XB)can with some embodiments be produced by art-recognized methods known,such as but not limited to those disclosed in U.S. Pat. No. 5,651,923.

In accordance with some embodiments, for the photochromic materialchosen from at least one indenonaphthopyran represented by Formula (XIA)and Formula (XIB), (a) Ring A″ is an unsubstituted, mono-substituted ordi-substituted heterocyclic ring chosen from furo, thieno, benzothieno,benzofurano or indolo, the 2, 3 or 3, 2 positions of said heterocyclicring being fused to the I side of Formula (XIB), or to the p side of theindenonaphthopyran represented by Formula (XIA), where said heterocyclicring substituents being C₁-C₆ alkyl.

In accordance with some further embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIA) and Formula (XIB), (b) R₅₂ and R₅₃ together form an oxogroup, a spiro heterocyclic group having 2 oxygen atoms and from 3 to 6carbon atoms including the spirocarbon atom, or R₅₂ and R₅₃ are eachhydrogen, hydroxy, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, phenyl or the group,—C(O)W″, wherein each W″ is C₁-C₆ alkoxy, mono(C₁-C₆)alkylamino ordi(C₁-C₆)alkylamino, or R₅₂ and R₅₃ are each the group, —N(R₁₀)R₁₁,described hereinbefore in (1)(d), or —OR₅₄, wherein each R₅₄ is C₁-C₆alkyl, phenyl(C₁-C₃)alkyl, the group, —CH(R₅₅)X″, wherein each R₅₅ ishydrogen or C₁-C₃ alkyl, each X″ is —COOR₅₅, or each R₅₄ is the group,—C(O)Y′, wherein each Y′ is C₁-C₆ alkyl.

In accordance with some further embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIA) and Formula (XIB): (c) R₄₇ in each case is independentlychosen from groups described hereinbefore in (8)(d) with regard toFormula (VIII), and q is in each case independently as describedhereinbefore in (8)(d) with regard to Formula (VIII); and (d) B and B′are each independently chosen from the groups described hereinbefore in(2)(d) with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIA) and Formula (XIB), there is the proviso that one or two ofR₄₇ independently for each q, R₅₂, R₅₃, B, and B′ is in each caseindependently an L-Group as defined in further detail herein below.

The photochromic materials represented by Formula (XIA) and Formula(XIB) can with some embodiments be produced by art-recognized methodsknown, such as but not limited to those disclosed in U.S. Pat. No.5,698,141.

In accordance with some embodiments, for the photochromic materialchosen from at least one indenonaphthopyran represented by Formula(XIIA) and Formula (XIIB): (a) Ring A″ is independently as describedhereinbefore in (11)(a), wherein Ring A″ is fused to the i side ofFormula (XIIB), or to the p side of Formula (XIIA); (b) R₅₆ is hydrogenor hydroxy and R₅₇ is the group, —CH(V′)₂, wherein V′ is —COOR₅₈, andeach R₅₈ is C₁-C₆ alkyl or phenyl(C₁-C₃)alkyl; or R₅₇ is the group,—CH(R₅₉)Y″, wherein R₅₉ is hydrogen and Y″ is —COOR₅₈, or —CH₂OR₆₀,wherein R₅₉ is C₁-C₆ alkyl or di(C₁-C₆)alkylamino; and R₆₀ is C₁-C₆alkyl; or (c) R₅₆ and R₅₇ together form the group, ═C(R₅₉)W′″, whereinW′″ is —COOR₅₈; (d) R₄₇ in each case is independently chosen from groupsdescribed hereinbefore in (8)(d) with regard to Formula (VIII), and q isin each case independently as described hereinbefore in (8)(d) withregard to Formula (VIII); and (e) B and B′ are each independently chosenfrom the groups described hereinbefore in (2)(d) with regard to Formula(II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIIA) and Formula (XIIB), there is the proviso that one or twoof R₄₇ independently for each q, R₅₆, R₅₇, B, and B′ is in each caseindependently an L-Group as defined in further detail herein below.

The photochromic materials represented by Formula (XIIA) and Formula(XIIB) can with some embodiments be produced by art-recognized methodsknown, such as but not limited to those disclosed in U.S. Pat. No.5,723,072.

In accordance with some embodiments, for the photochromic materialchosen from at least one indenonaphthopyran represented by Formula(XIII): (a) R₆₁′ is independently chosen for each q from, (i) C₁-C₆alkoxy, perfluoroalkyl, halogen, and (ii) —SR₆₇, R₆₇ being C₁-C₆ alkylor aryl, and (iii) an amino group described hereinbefore in (4)(b)(i),(ii) or (iii); and q is the integer 1.

With further reference to Formula (XIII), (b) R₆₁ is chosen fromperfluor alkyl or halogen,

In accordance with some further embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIII), (c) R₆₂ and R₆₃ are each independently chosen from (i)through (vii): (i) hydrogen, hydroxy, C₁-C₁₂ alkyl, C₃-C₁₂ alkylidene,C₃-C₇ cycloalkyl, or —C(O)W″, wherein W″ being the same group describedhereinbefore in (11)(b); (ii) an unsubstituted, mono- di- ortri-substituted group chosen from phenyl; each of said phenylsubstituents in (c) ii) being chosen independently for each occurrencefrom chloro, fluoro, C₁-C₆ alkyl or C₁-C₆ alkoxy; (iii) amonosubstituted phenyl, described hereinbefore in (2)(d)(iv); (iv)—OR₆₇, R₆₇ being chosen from C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl, C₁-C₆alkoxy(C₂-C₄)alkyl tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy,tri(C₁-C₆)alkoxysilyl, tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆alkoxy)silyl, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl or di(C₁-C₆)alkoxy(C₁-C₆alkyl)silyloxy; (v) —CH(Q′″)₂, Q′″ being chosen from —COOR₆₉ and R₆₉being C₁-C₆ alkyl; (vi) —CH(R₇₀)G″. R₇₀ being chosen from hydrogen,C₁-C₆ alkyl or an unsubstituted, mono- or di-substituted aryl group,phenyl or naphthyl, and G″ being chosen from —COOR₆₉, —COR₇₁ or—CH₂OR₇₂, wherein R₇₁ being chosen from hydrogen, C₁-C₆ alkyl, anunsubstituted, mono- or di-substituted aryl group, phenyl or naphthyl,amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino, mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, diphenylamino, mono- or di(C₁-C₆)alkylsubstituted diphenylamino, mono- or di(C₁-C₆)alkoxy substituteddiphenylamino, morpholino or piperidino; R₇₂ being chosen from hydrogen,—C(O)R₆₉, C₁-C₆ alkyl, C₁-C₃ alkoxy(C₁-C₆)alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl or an unsubstituted,mono- or di-substituted aryl group, phenyl or naphthyl, each of saidaryl group substituents being independently chosen from C₁-C₆ alkyl orC₁-C₆ alkoxy; or (vii) R₆₂ and R₆₃ together form an oxo group or asubstituted or unsubstituted spiro-carbocyclic ring containing 3 to 6carbon atoms or a substituted or unsubstituted spiro-heterocyclic groupcontaining 1 or 2 oxygen atoms and 3 to 6 carbon atoms including thespirocarbon atom, said spiro-carbocyclic ring and spiro-heterocyclicgroup being annellated with 0, 1 or 2 benzene rings, said substituentsbeing hydrogen or C₁-C₆ alkyl.

In accordance with some further embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIII), (d) R₆₄ is chosen from hydrogen, C₁-C₆ alkyl or thegroup R_(a) chosen from: (i) —OR₇₃, R₇₃ being chosen fromphenyl(C₁-C₃)alkyl, C₁-C₆ alkyl, mono(C₁-C₆)alkyl substitutedphenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl,C₁-C₆ alkoxy(C₂-C₄)alkyl, C₃-C₇ cycloalkyl, mono(C₁-C₄)alkyl substitutedC₃-C₇ cycloalkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, allyl or—CH(R₆₈)Q″; or (ii) an amino group described hereinbefore in (4)(b)(i),(ii) or (iii) with regard to Formula (IV).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIII): (e) R₆₅ is chosen from hydrogen, perfluor alkyl, halogenor R_(a), where R_(a) is the same as described hereinbefore in (d); (f)R₆₆ is chosen from hydrogen, C₁-C₆ alkyl or R_(a), where R_(a) is thesame as described hereinbefore in (d); or (g) R₆₅ and R₆₆ together formone of the following Formulas,

wherein J′ and K′ are oxygen, and groups R₁₈ and R₁₉ are each the sameas described hereinbefore in (2)(d)(v).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIII), (h) B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d) with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIII), there is the proviso that one or two of R₆₁, R⁶¹,independently for each q, R₆₂, R₆₃, R⁶⁴, R₆₅, R₆₆, B, and B′ is in eachcase independently an L-Group as defined in further detail herein below.

The photochromic materials represented by Formula (XIII) can with someembodiments be produced by art-recognized methods known, such as but notlimited to those disclosed in U.S. Pat. No. 7,262,295 B2.

In accordance with some embodiments, for the photochromic materialchosen from at least one indenonaphthopyran represented by Formula(XIV): (a) R₇₄ and R₇₅ are each independently as described hereinbeforewith regard to R₆₂ and R₆₃ in (13)(c); (b) each R₇₆ is independentlychosen from di(C₁-C₆)alkylamino, dicyclohexylamino, diphenylamino,piperidyl, morpholinyl, pyridyl, halogen, or group —C(O)W″, the group—C(O)W″ being the same group described hereinbefore in (11)(b); and q isthe integer 0, 1, or 2; or when q is 2, and the R₇₆ substituents areadjacent, each pair of substituents independently forms a substituted orunsubstituted fused carbocyclic or heterocyclic ring chosen from benzo,dihydrofurano, 1,4-dioxolo, 1,3-dioxino, or benzofuro, the substituentsof said fused carbocyclic or heterocyclic ring being chosen from thegroup consisting of C₁-C₆ alkyl or C₁-C₆ alkoxy; and (c) B and B′ areeach independently chosen from the groups described hereinbefore in(2)(d) with regard to Formula (II).

In accordance with some additional embodiments, for the photochromicmaterial chosen from at least one indenonaphthopyran represented byFormula (XIV), there is the proviso that one or two of R₇₄, R₇₅, R₇₆independently for each q, B, and B′ is in each case independently anL-Group as defined in further detail herein below.

The photochromic materials represented by Formula (XIV) can with someembodiments be produced by art-recognized methods known, such as but notlimited to those disclosed in U.S. Pat. No. 6,736,998 B2.

In accordance with some embodiments of the present invention,independently for each L-Group represented by Formula (XV): (i) Q₁, Q₂,and Q₃ are each independently for each occurrence a divalent groupselected from optionally substituted aryl, optionally substitutedheteroaryl, optionally substituted cycloalkyl, and optionallysubstituted heterocycloalkyl, wherein each substituent is independentlyselected from: P, liquid crystal mesogens, halogen, poly(C₁-C₁₂ alkoxy),C₁-C₁₂ alkoxycarbonyl, C₁-C₁₂ alkylcarbonyl, perfluoro(C₁-C₁₂)alkoxy,perfluoro(C₁-C₁₂)alkoxycarbonyl, perfluoro(C₁-C₁₂)alkylcarbonyl, C₁-C₁₈acetyl, C₃-C₇ cycloalkyl, C₃-C₇ cycloalkoxy, straight-chain C₁-C₁₂alkyl, and branched C₁-C₁₂ alkyl; wherein said straight-chain C₁-C₁₂alkyl and branched C₁-C₁₂ alkyl are mono-substituted with a groupselected from, halogen, and C₁-C₁₂ alkoxy; or wherein saidstraight-chain C₁-C₁₂ alkyl and branched C₁-C₁₂ alkyl arepoly-substituted with at least two groups independently selected fromhalogen.

In accordance with some further embodiments of the present invention,independently for each L-Group represented by Formula (XV): (ii) c, d,e, and f are each independently an integer chosen from 1 to 10; and S₁,S₂, S₃, S₄, and S₅ are each independently for each occurrence a spacerunit selected from (1) through (3): (1) substituted or unsubstitutedalkylene, substituted or unsubstituted haloalkylene, —Si(CH₂)_(g)—, and—(Si[(CH₃)₂]O)_(h)—, wherein g for each occurrence is independentlychosen from an integer from 1 to 10; h for each occurrence isindependently chosen from an integer from 1 to 8; and said substitutesfor the alkylene and haloalkylene are independently selected from C₁-C₁₂alkyl, C₃-C₇ cycloalkyl and phenyl; (2) —N(Z)—, —C(Z)═C(Z)—, and asingle bond, wherein Z for each occurrence is independently selectedfrom hydrogen, C₁-C₁₂ alkyl, C₃-C₇ cycloalkyl and phenyl; and (3) —O—,—C(═O)—, —C≡C—, —N═N—, —S—, and —S(═O)—; provided that when two spacerunits comprising heteroatoms are linked together the spacer units arelinked so that heteroatoms of the first spacer unit are not directlylinked to the heteroatoms of the second spacer unit; and provided thatwhen S₁ is linked to Formula I and S₅ is linked to P, S₁ and S₅ are eachlinked so that two heteroatoms are not directly linked to each other.

In accordance with some further embodiments of the present invention,independently for each L-Group represented by Formula (XV), (iii) P foreach occurrence is selected from hydroxy, amino, C₂-C₁₂ alkenyl, C₂-C₁₂alkenyl, silyl, siloxy, (tetrahydro-2H-pyran-2-yl)oxy, isocyanato,acryloyloxy, methacryloyloxy, epoxy, carboxylic acid, carboxylic ester,C₁-C₁₂ alkyloxycarbonyloxy, halocarbonyl, hydrogen, aryl,hydroxy(C₁-C₁₂)alkyl, C₁-C₁₂ alkyl, C₁-C₁₂ alkoxy, ethylene, acryloyl,acryloyloxy(C₁-C₁₂)alkyl, methacryloyl, methacryloyloxy(C₁-C₁₂)alkyl,oxetanyl, glycidyl, vinyl ether, siloxane derivatives, unsubstitutedcinnamic acid derivatives, cinnamic acid derivatives that aresubstituted with at least one of methyl, methoxy, cyano and halogen, andsubstituted or unsubstituted chiral or non-chiral monovalent or divalentgroups chosen from steroid radicals, wherein each substituent isindependently chosen from C₁-C₁₂ alkyl, C₁-C₁₂ alkoxy, amino, C₃-C₇cycloalkyl, C₁-C₁₂ alkyl(C₁-C₁₂)alkoxy, or fluoro(C₁-C₁₂)alkyl, or P isa structure having from 2 to 4 reactive groups.

In accordance with some further additional embodiments of the presentinvention, independently for each L-Group represented by Formula (XV),(iv) d′, e′ and f′ are each independently chosen from 0, 1, 2, 3, and 4,provided that a sum of d′+e′+f′ is at least 2.

In accordance with some embodiments of the present invention,independently for each L-Group represented by Formula (XV): (i) Q₁, Q₂,and Q₃ are each independently for each occurrence a divalent groupselected from optionally substituted aryl, optionally substitutedheteroaryl, optionally substituted cycloalkyl, and optionallysubstituted heterocycloalkyl, wherein each substituent is independentlyselected from: P, C₁-C₆ alkoxycarbonyl, perfluoro(C₁-C₆)alkoxy, C₃-C₇cycloalkyl, C₃-C₇ cycloalkoxy, straight-chain C₁-C₆ alkyl, and branchedC₁-C₆ alkyl; wherein said straight-chain C₁-C₆ alkyl and branched C₁-C₆alkyl are mono-substituted with a group selected from halogen and C₁-C₁₂alkoxy; or wherein said straight-chain C₁-C₆ alkyl and branched C₁-C₆alkyl are poly-substituted with at least two groups independentlyselected from halogen.

In accordance with some further embodiments of the present invention,independently for each L-Group represented by Formula (XV): (ii) c, d,e, and f are each independently an integer chosen from 1 to 10; and S₁,S₂, S₃, S₄, and S₅ are each independently for each occurrence a spacerunit selected from (1) through (3): (1) substituted or unsubstitutedalkylene: (2) —N(Z)—, —C(Z)═C(Z)—, and a single bond, wherein Z for eachoccurrence is independently selected from hydrogen and C₁-C₆ alkyl; and(3) —O—, —C(═O)—, —C≡C—, and —N═N—, —S—; provided that when two spacerunits comprising heteroatoms are linked together the spacer units arelinked so that heteroatoms of the first spacer unit are not directlylinked to the heteroatoms of the second spacer unit; and provided thatwhen S₁ is linked to Formula I and S₅ is linked to P, S₁ and S₅ are eachlinked so that two heteroatoms are not directly linked to each other.

In accordance with some further embodiments of the present invention,independently for each L-Group represented by Formula (XV): (iii) P foreach occurrence is independently selected from hydroxy, amino, C₂-C₆alkenyl, C₂-C₆ alkenyl, siloxy, (tetrahydro-2H-pyran-2-yl)oxy,isocyanato, acryloyloxy, methacryloyloxy, epoxy, carboxylic acid,carboxylic ester, C₁-C₆ alkyloxycarbonyloxy, hydrogen, aryl,hydroxy(C₁-C₆)alkyl, C₁-C₆ alkyl, ethylene, acryloyl,acryloyloxy(C₁-C₁₂)alkyl, oxetanyl, glycidyl, vinyl ether, siloxanederivatives, and substituted or unsubstituted chiral or non-chiralmonovalent or divalent groups chosen from steroid radicals, wherein eachsubstituent is independently chosen from C₁-C₆ alkyl, C₁-C₆ alkoxy,amino, C₃-C₇ cycloalkyl.

With some embodiments of the present invention, each L-Group of eachphotochromic material is independently selected from the following L(1)through L(37):

With some embodiments of the present invention, each L-Group of eachphotochromic material is independently selected from the following L(a)through L(z):

With some embodiments of the present invention, each L-Group of eachphotochromic material is independently selected from the following L(aa)through L(ae):

With some embodiments of the present invention, each L-Group of eachphotochromic material is independently selected from the followingL-DC-(a) through L-DC-(I):

-   L-DC-(a) (4-trans-(4-pentylcyclohexyl)benzamido)phenyl,-   L-DC-(b) (4-(4-trans-(4-pentylcyclohexyl)phenoxy)carbonyl)phenyl,-   L-DC-(c) 4-(4-(4-trans-(4-pentylcyclohexyl)phenyl)benzamido)phenyl,-   L-DC-(d)    4-((trans-(4′-pentyl-[1,1-bi(cyclohexan)]-4-yl)oxy)carbonyl)phenyl,-   L-DC-(e)    4-(4′-(4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarboxamido)phenyl,-   L-DC-(f)    4-((4′-(4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)oxy)benzamido,-   L-DC-(g)    4-(4′-pentylcyclohexyl)[1,1′-biphenyl]-4-carbonyl)piperazin-1-yl,-   L-DC-(h)    4-(4-(4-trans-(4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl,-   L-DC-(i)    2-methyl-4-trans-(4-((4′-trans-(4-pentylcyclohexyl)biphenyl-4-yloxy)carbonyl)cyclohexanecarboxamido)phenyl,-   L-DC-(j)    4′-(4′-pentylbi(cyclohexane-4-)carbonyloxy)biphenylcarbonyloxy,-   L-DC-(k)    4-(((3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yloxy)carbonyl)piperazin-1-yl,    and-   L-DC-(l)    4-((S)-2-methylbutoxy)phenyl)-10-(4-(((3R,3aS,6S,6aS)-6-(4′-trans-(4-pentylcyclohexyl)biphenylcarbonyloxy)hexahydrofuro[3,2-b]furan-3-yloxy)carbonyl)phenyl.

The photochromic materials of the present invention include at least oneL-Group independently bonded to at least one position of thephotochromic molecule. With some embodiments, at least one and less thanall available positions of the photochromic molecule of the photochromicmaterials of the present invention each independently have bondedthereto an L-Group. In accordance with some additional embodiments, oneto two available positions of the photochromic molecule of thephotochromic materials of the present invention each independently havebonded thereto an L-Group. In accordance with some further embodiments,one available position of the photochromic molecule of the photochromicmaterials of the present invention has bonded thereto an L-Group.

With some embodiments, the photochromic material is selected from atleast one fluoranthenoxazine represented by Formula (I) having at leastone L-Group bonded to a Ring Position selected from Ring Position 1(R₇), Ring Position 11 (R₆), Ring Position 5′ (R₂), and/or Ring Position6′ (R₂).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (II) having an L-Groupbonded to Ring Position 7 (R₁₂).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (III) having an L-Groupbonded to Ring Position 8 (R₂₃).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (IV) having an L-Groupbonded to Ring Position 9 (R₂₄).

With some embodiments, the photochromic material is selected from atleast one phenanthropyan represented by Formula (VA) having at least oneL-Group bonded a Ring Position selected from Ring Position 8 (R₃₃), RingPosition 9 (R₃₃), and Ring Position 12 (R₃₃). With some embodiments, thephotochromic material is selected from at least one phenanthropyanrepresented by Formula (VB) having an L-Group bonded Ring Position 8(R₃₃).

With some embodiments, the photochromic material is selected from atleast one fluoranthenopyran represented by Formula (VI) having at leastone L-Group bonded to a Ring Position selected from Ring Position 1(R₃₆), Ring Position 9 (R₃₅), and/or Ring Position 12 (R₃₅).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (VII) having at least oneL-Group bonded to Ring Position 11 (R₄₇).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (VIII) having at least oneL-Group bonded to a Ring Position selected from Ring Position 8 (R₄₇)and/or Ring Position 10 (R₄₇).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (IXA) having at least oneL-Group bonded to a Ring Position selected from Ring Position 8 (R₄₇),Ring Position 9 (R₄₇), and/or Ring Position 12 (R₄₇). With someembodiments, the photochromic material is selected from at least onenaphthopyran represented by Formula (IXB) having at least one L-Groupbonded to a Ring Position selected from Ring Position 8 (R₄₇), RingPosition 9 (R₄₇), and/or Ring Position 12 (R₄₇).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (IXC) having at least oneL-Group bonded to a Ring Position selected from Ring Position 1 (R₄₇),Ring Position 4 (R₄₇), Ring Position 7 (R₄₇), and/or Ring Position 10(R₄₇). With some embodiments, the photochromic material is selected fromat least one naphthopyran represented by Formula (IXD) having at leastone L-Group bonded to a Ring Position selected from Ring Position 6(R₄₇), Ring Position 9 (R₄₇), and/or Ring Position 12 (R₄₇).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (IXE) having at least oneL-Group bonded to a Ring Position selected from Ring Position 3 (R₄₇)and/or Ring Position 9 (R₄₇). With some embodiments, the photochromicmaterial is selected from at least one naphthopyran represented byFormula (IXF) having at least one L-Group bonded to a Ring Positionselected from Ring Position 3 (R₄₇) and/or Ring Position 9 (R₄₇).

With some embodiments, the photochromic material is selected from atleast one naphthopyran represented by Formula (IXG) having at least oneL-Group bonded to a Ring Position selected from Ring Position 6 (R₄₇),Ring Position 7 (R₄₇), Ring Position 9 (R₄₇), and/or Ring Position 14(R₄₇). With some embodiments, the photochromic material is selected fromat least one naphthopyran represented by Formula (IXH) having at leastone L-Group bonded to a Ring Position selected from Ring Position 5(R₄₇), Ring Position 10 (R₄₇), and/or Ring Position 13 (R₄₇).

With some embodiments, the photochromic material is selected from atleast one indenonaphthopyran represented by Formula (XIII) having atleast one L-Group bonded to a Ring Position selected from Ring Position7 (R₆₅) and/or Ring Position 10 (R₆₁′).

With some embodiments, the photochromic material is selected from atleast one indenonaphthopyran represented by Formula (XIV) having atleast one L-Group bonded to a Ring Position selected from Ring Position7 (R₇₆), Ring Position 10 (R₇₆), and/or Ring Position 13 (R₇₆).

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least onefluoroanthenoxazine represented by Formula (I), which is selected from:

-   1-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-1′,3′,3′-trimethyl-spiro[indoline-2′,5-[3H]-fluorantheno[3,2-b][1,4]oxazine];    and-   1-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-1′-propyl-3′,3′,4′,5′    (or    3′,3′,5′,6′)-tetramethyl-spiro[indoline-2′,5-[3H]-fluorantheno[3,2-b][1,4]oxazine].

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least one naphthopyranrepresented by Formula (II), which is selected from:

-   7-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-3-(2-fluorophenyl)-3-(4-methoxyphenyl)-8-hydroxy-9-carbopropoxy-3H-naphtho[2,1-b]pyran;-   6,7-bis(4-(4′-(trans-4-pentylcyclohexyl)biphenyl-4-ylcarboxamido)phenyl)-3-(2-fluorophenyl)-3-(3-methoxy-2-thienyl)-7-h-pentyl-8-benzoyloxy-3H-naphtho[2,1-b]pyran;    and-   7-(4′-(trans,trans-4′-pentylbi(cyclohexane-4-)carbonyloxy)biphenylcarbonyloxy)-3-(2,4-dimethoxyphenyl)-3-(4-methoxyphenyl)-8-acetoxy-9-carbomethoxy-3H-naphtho[2,1-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least one naphthopyranrepresented by Formula (III), which is selected from:

-   8-(4′-(trans,trans-4′-pentylbi(cyclohexane-4-)carbonyloxy)biphenylcarbonyloxy)-2,2-di(4-methoxyphenyl)-5-methoxycarbonyl-6-hydroxy-2H-naphtho[1,2-b]pyran;    and-   8-(4-(4-(trans-4-pentylcyclohexyl)benzamido)phenyl)-2,2-diphenyl-5-methoxycarbonyl-6-phenylamino-2H-naphtho[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least one naphthopyranrepresented by Formula (IV), which is selected from:

-   8-(4′-(trans,trans-4′-pentylbi(cyclohexane-4-) carbonyloxy)biphenyl    carbonyloxy)-2-phenyl-2-(4-morpholinophenyl)-5-carbomethoxy-9-dimethylamino-2H-naphtho[1,2-b]pyran;    and-   8-(4-(4-(trans-4-pentylcyclohexyl)benzamido)phenyl)-2-phenyl-2-(4-methoxyphenyl)-5-carbomethoxy-9-dimethylamino-2H-naphtho[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least one phenanthropyanrepresented by at least one of Formula (VA) and Formula (VB), which isselected from:

-   8-(4′-(trans,trans-4′-pentylbi(cyclohexane-4-) carbonyloxy)biphenyl    carbonyloxy)-3,3-diphenyl-12-methoxycarbonyl-11-methyl-3H-phenanthro[1,2-b]pyran;-   8-(2-methyl-4-(trans-4-((4′-((trans-4-pentylcyclohexyl)biphenyl-4-yloxy)carbonyl)cyclohexanecarboxamido)phenyl)-2,2-diphenyl-5-methoxcarbonyl-6-methyl-2H-phenanthro[4,3-b]pyran;-   8-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)piperazin-1-yl)-2-(4-methoxyphenyl)-2-phenyl-5-methoxycarbonyl-6-methyl-2H-phenanthro[4,3-b]pyran;    and-   8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]3-(2-fluorophenyl)-3-(4-methoxyphenyl)-6-methoxy-12-methoxycarbonyl-3H-phenanthro[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least onefluoranthenopyran represented by Formula (VI), which is selected from:

-   1-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl]benzamido)-5-(4-methoxyphenyl)-5-(4-morpholinophenyl)-8-ethoxycarbonyl-5H-fluorantheno[3,2-b]pyran;    and-   8-(2-methyl-4-(trans-4-((4′-((trans-4-pentylcyclohexyl)biphenyl-4-yloxy)carbonyl)cyclohexanecarboxamido)phenyl)-5,5-bis(4-methoxyphenyl)-2-methoxy-8-methoxycarbonyl-5H-fluorantheno[3,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least one naphthopyranrepresented by Formula (VII), which is selected from:

-   11-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)phenyl]-7,7-diphenyl-2-(1-phenylethyl)-4-oxo-4H-7H-[1,3]dioxino[5′,4′:3,4]naphtho[1,2-b]pyran;    and-   11-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)piperazin-1-yl)-3-(2-methacryloyloxyethyl)-7,7-diphenyl-2,4-dioxo-2,3,4,7-tetrahydro[1,3]oxazino[5′,6′:3,4]naphtho[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least one naphthopyranrepresented by Formula (VIII), which is selected from:

-   10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-2-(4-methoxyphenyl)-2-(2,4-dimethoxy-phenyl)-7-diphenylmethyl-5-oxo-2H-5H-pyrano[3′,4′:3,4]naphtho[1,2-b]pyran;    and-   10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-2-(4-methoxyphenyl)-2-(4-morphiliono-phenyl)-7-diphenylmethyl-5-oxo-2H-5H-pyrano[3′,4′:3,4]naphtho[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least one naphthopyranrepresented by at least one of Formulas (IXA), (IXB), (IXC), (IXD),(IXE), (IXF), (IXG) and (IXH), which is selected from:

-   2-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-6,6-bis(4-methoxyphenyl)-6,10-dihydro[2]benzopyrano-[3′,4′:3,4]naphtho(1,2-b)pyran;-   8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-2-(4-methoxyphenyl)-2-(4-morpholinophenyl)-10-oxo-2,10-dihydro[2]benzopyrano[4′,3′:3,4]naphtho(2,1-b)pyran;-   8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(4-methoxyphenyl)-2-phenyl-12,13-dimethoxy-10-oxo-2,10-dihydro[2]benzopyrano[4′,3′:3,4]naphtho(2,1-b)pyran;-   2-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-6,6-diphenyl-9-oxo-6,9-dihydro[1]benzopyrano[3′,4′:3,4]naphtho(1,2-b)pyran;    and-   6-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-3,3-diphenyl-8-oxo-3,8-dihydro[2]benzopyrano[3′,4′:5,6]naphtho(2,1-b)pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least one naphthopyranrepresented by at least one of Formula (XA) and Formula (XB), which isselected from:

-   8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2,2-bis(4-methoxyphenyl)-5-methoxycarbonyl-6-methyl-2H-benzofuro[2′,3′:8,9]naphtho[12-b]pyran;    and-   3,3-Bis(4-methoxyphenyl)-13-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-10-methoxy-3H-naphtho[2″,1″:4′,5′]furo[2′,3′:3,4]naphtho[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least oneindenonaphthopyran represented by at least one of Formula (XIA) andFormula (XIB), which is selected from:

-   10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-3,3-di(4-methoxyphenyl)-16-hydroxy-16-ethyl-16H-benzofuro[2′,3′:7,8]indeno[2′,3′:3,4]naphtho[1,2-b]pyran;-   8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-3,3-di(4-methoxyphenyl)-16-hydroxy-16H-benzofuro[2″,3″:6′,7]indeno[3′,2′:4,3]naphtho[1,2-b]pyran;    and-   3,3-di(4-methoxyphenyl)-10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-16-hydroxy-16-ethyl-16H-benzofuro[2″,3″:6′,7]indeno[3′,2′:4,3]naphtho[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least oneindenonaphthopyran represented by at least one of Formula (XIIA) andFormula (XIIB), which is selected from:

-   3,3-di(4-methoxyphenyl)-10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-16-(ethoxycarbonyl)methyl-16-hydroxy-3,16-di[H]-benzofuro[2′,3′:7,8]indeno[2′,3′:3,4]naphtho[1,2-b]pyran;    and-   10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-3-(4-methoxyphenyl)-3-(4-morpholinophenyl)-16-(ethoxycarbonyl)methyl-16-hydroxy-3,16-di[H]-benzofuro[2′,3′:7,8]indeno[2′,3′:3,4]naphtho[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least oneindenonaphthopyran represented by Formula (XIII), which is selectedfrom:

-   3-(4-fluorophenyl)-3-(4-morpholinophenyl)-6,8-difluoro-10-(4-(4′-trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;-   3-(4-butoxyphenyl)-3-(4-fluorophenyl)-5,7-dichloro-10-(4-(4′-trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;-   3-(4-butoxyphenyl)-3-(4-fluorophenyl)-6,8-difluoro-10-(4-(4′-trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;-   3-(4-butoxyphenyl)-3-(4-fluorophenyl)-6-(trifluoromethyl)-10-[4-(4′-(4-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyloxy)benzamido]-12-bromo-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;-   3-(4-butoxyphenyl)-3-(4-methoxyphenyl)-5,7-dichloro-10-(4-(4′-trans-4-pentylcyclohexyl)-1-methoxy-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;-   5,7-Dichloro-12-bromo-3,3-bis(4-hydroxyphenyl)-11-methoxy-13,13-dimethyl-10-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarboxamido)phenyl)-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;-   3-(4-butoxyphenyl)-3-(4-fluorophenyl)-6-(trifluoromethyl)-10-[4-(4′-(4-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyloxy)benzamido]-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;-   3-(4-butoxyphenyl)-3-(4-fluorophenyl)-7-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-11-(trifluoromethyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;    and-   3-(4-butoxyphenyl)-3-(4-fluorophenyl)-6-(trifluoromethyl)-O-[(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-yl)carbonyl)piperazin-1-yl]-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran.

The photochromic material of the photochromic article of the presentinvention, with some embodiments, includes at least oneindenonaphthopyran represented by Formula (XIV), which is selected from:

-   7-(4-((4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)oxy)benzamido)-3,3,9-triphenyl-3H-9H-benzo[4″,5″]indeno[3′,2′:3,4]naphtho[1,2-b]pyran;-   7-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarboxamido)phenyl)-3-(4-morpholinophenyl)-3,9-diphenyl-3H-9H-benzo[4″,5″]indeno[3′,2′:3,4]naphtho[1,2-b]pyran;-   10-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)piperazin-1-yl)-3,3-di(4-methoxyphenyl)-9,9-dimethyl-7,11-dimethoxy-3H-9H-benzo[4″,5″]indeno[3′,2′:3,4]naphtho[1,2-b]pyran;    and-   7-(2-methyl-4-(trans-4-((4′-((trans-4-pentylcyclohexyl)biphenyl-4-yloxy)carbonyl)cyclohexanecarboxamido)phenyl)-3,3-di(4-methoxyphenyl)-9-methyl-11,13-dimethoxy-3H-9H-benzo[4″,5″]indeno[3′,2′:3,4]naphtho[1,2-b]pyran;

In accordance with some embodiments, the photochromic article includes,in addition to at least one photochromic material (1) through (14), atleast one fixed tint dye (or fixed colorant or fixed dye or fixed tint).The fixed tint dye can, with some embodiments, be selected from azodyes, anthraquinone dyes, xanthene dyes, azime dyes, iodine, iodidesalts, polyazo dyes, stilbene dyes, pyrazolone dyes, triphenylmethanedyes, quinoline dyes, oxazine dyes, thiazine dyes, polyene dyes, andmixtures thereof.

The fixed tint dye, with some embodiments, can be present in thephotochromic article in amounts sufficient to provide a desired colorand percent transmittance of actinic radiation, such as visible light.The types and amounts of fixed tint dye can be selected, with someembodiments, to provide the photochromic with a base color and basepercent transmittance, when the photochromic compound(s) of thephotochromic article undergoes neither photochromic activation nordichroic activation. The types and amounts of fixed tint dye can beselected, with some embodiments, to provide the photochromic articlewith one or more activated colors and one or more activated percenttransmittance values, when the photochromic compound(s) of thephotochromic article undergoes photochromic activation and/or dichroicactivation. The fixed tint dye can be present in the photochromicarticle in varying amounts to provide the intended effect such as donewith other conventional additives.

In accordance with some non-limiting embodiments, adjuvant materials canalso be incorporated into host material used to produce the photochromicarticles of the present invention. Such adjuvants can be used, prior to,simultaneously with, or subsequent to application or incorporation ofthe photochromic material. For purposes of non-limiting illustration,ultraviolet light absorbers can be admixed with photochromic materialsbefore their addition to the composition or such absorbers can besuperposed, e.g., superimposed, as a coating between the photochromicarticle and the incident light.

Further, stabilizers can be used in conjunction with the photochromicmaterials (such as being admixed with the photochromic materials priorto their addition to a composition) to improve the light fatigueresistance of the photochromic materials, provided that such stabilizersdo not prevent the photochromic materials from activating. Non-limitingexamples of stabilizers include, hindered amine light stabilizers(HALS), asymmetric diaryloxalamide (oxanilide) compounds, and singletoxygen quenchers (e.g., a nickel ion complex with an organic ligand)polyphenolic antioxidants, or mixtures of such stabilizers arecontemplated. In some non-limiting embodiments, stabilizers can be usedalone or in combination. Non-limiting examples of stabilizers aredescribed in U.S. Pat. Nos. 4,720,356, 5,391,327 and 5,770,115.

In accordance with some embodiments, photochromic article is adapted toexhibit a neutral activated color. A neutral activated color can beachieved, with some embodiments, by selection of the photochromicmaterial(s) (1) through (14) alone, and optionally in combination with(a) one or more photochromic materials that are different thanphotochromic materials (1)-(14), and/or (b) one or more fixed tint dyes,as described above. With some embodiments, the photochromic article isadapted so as to exhibit a desired resultant color, e.g., asubstantially neutral color when activated with unfiltered sunlight,e.g., as near a neutral color as possible given the colors of theactivated photochromic materials, and a retained coloration, measured asdelta OD or ΔOD, of at least 12 percent of that demonstrated underconditions of outdoor exposure when tested in the Behind the WindshieldTest described herein in the Examples. In accordance with some alternatenon-limiting embodiments, the photochromic articles of the presentinvention demonstrate an activated state luminous transmittance atsaturation less than 60 percent when activated under the conditions inthe Behind the Windshield Test. In one non-limiting embodiment, the BWSphotochromic materials could be used to produce articles having a widerange of colors, e.g., pink. Further discussion of neutral colors andways to describe colors can be found in U.S. Pat. No. 5,645,767 column12, line 66 to column 13, line 19.

In accordance with some non-limiting embodiments, it is contemplatedthat the photochromic materials of the present invention (1)-(14) (“BWSphotochromic materials”) can each be used alone or in combination withother BWS photochromic materials of the present invention, or incombination with one or more other photochromic materials, e.g.,photochromic materials having at least one activated absorption maximawithin the range of between about 400 and 700 nanometers, and can beincorporated, e.g., dissolved or dispersed, in a polymeric organic hostmaterial used to prepare photochromic articles, which become coloredwhen activated to an appropriate hue.

With some embodiments, the photochromic article further includes atleast one other photochromic material (c) that is different fromphotochromic material (b). The other photochromic material (c) can, withsome embodiments, be selected from an organic photochromic material,inorganic photochromic material or a mixture thereof.

Classes of organic photochromic materials from which the otherphotochromic material (c) can be selected include, but are not limitedto, naphthopyrans, benzopyrans, phenanthropyrans, indenonaphthopyrans,oxazines, metal-dithiozonates, fulgides, fulgimides,spiro(indoline)pyrans or mixtures thereof.

Classes of inorganic photochromic materials from which the otherphotochromic material (c) can be selected include, but are not limitedto, silver halide, cadmium halide, copper halide europium (II), cerium(III) or mixtures thereof. Such inorganic photochromic materials aredescribed in Kirk Othmer Encyclopedia of Chemical Technology, 4thEdition, Volume 6, pages 322-325, which disclosure is incorporatedherein by reference.

In accordance with some embodiments, the other photochromic material (c)can include the following classes of materials: chromenes, e.g.,naphthopyrans, benzopyrans, indenonaphthopyrans and phenanthropyrans;spiropyrans, e.g., spiro(benzindoline)naphthopyrans,spiro(indoline)benzopyrans, spiro(indoline)naphthopyrans,spiro(indoline)quinopyrans and spiro(indoline)pyrans; oxazines, e.g.,spiro(indoline)naphthoxazines, spiro(indoline)pyridobenzoxazines,spiro(benzindoline)pyridobenzoxazines, spiro(benzindoline)naphthoxazinesand spiro(indoline)benzoxazines; mercury dithizonates, fulgides,fulgimides and mixtures of such photochromic materials.

Such classes of other photochromic materials (c) are described in U.S.Pat. No. 4,931,220 at column 8, line 52 to column 22, line 40; U.S. Pat.No. 5,645,767 at column 1, line 10 to column 12, line 57; U.S. Pat. No.5,658,501 at column 1, line 64 to column 13, line 17; U.S. Pat. No.6,153,126 at column 2, line 18 to column 8, line 60; U.S. Pat. No.6,296,785 at column 2, line 47 to column 31, line 5; U.S. Pat. No.6,348,604 at column 3, line 26 to column 17, line 15; and U.S. Pat. No.6,353,102 at column 1, line 62 to column 11, line 64, the disclosures ofthe aforementioned patents are incorporated herein by reference.Spiro(indoline)pyrans are also described in the text, Techniques inChemistry, Volume III, “Photochromism”, Chapter 3, Glenn H. Brown,Editor, John Wiley and Sons, Inc., New York, 1971.

With some embodiment the other photochromic material (c) can include oneor more polymerizable photochromic materials. Classes of polymerizablephotochromic materials include, but are not limited to: polymerizablenaphthoxazines disclosed in U.S. Pat. No. 5,166,345 at column 3, line 36to column 14, line 3; polymerizable spirobenzopyrans disclosed in U.S.Pat. No. 5,236,958 at column 1, line 45 to column 6, line 65;polymerizable spirobenzopyrans and spirobenzothiopyrans disclosed inU.S. Pat. No. 5,252,742 at column 1, line 45 to column 6, line 65;polymerizable fulgides disclosed in U.S. Pat. No. 5,359,085 at column 5,line 25 to column 19, line 55; polymerizable naphthacenediones disclosedin U.S. Pat. No. 5,488,119 at column 1, line 29 to column 7, line 65;polymerizable spirooxazines disclosed in U.S. Pat. No. 5,821,287 atcolumn 3, line 5 to column 11, line 39; polymerizable polyalkoxylatednaphthopyrans disclosed in U.S. Pat. No. 6,113,814 at column 2, line 23to column 23, line 29; and the polymerizable photochromic compoundsdisclosed in WO97/05213 and application Ser. No. 09/828,260 filed Apr.6, 2001. The disclosures of the aforementioned patents on polymerizablephotochromic materials are incorporated herein by reference.

Further classes of other photochromic materials (c) include, but are notlimited to: organo-metal dithiozonates, e.g., (arylazo)-thioformicarylhydrazidates, e.g., mercury dithizonates which are described in, forexample, U.S. Pat. No. 3,361,706 at column 2, line 27 to column 8, line43; and fulgides and fulgimides, e.g., the 3-furyl and 3-thienylfulgides and fulgimides, which are described in U.S. Pat. No. 4,931,220at column 1, line 39 through column 22, line 41, the disclosures ofwhich are incorporated herein by reference.

With some further embodiments, the other photochromic material (c) canbe selected from organic photochromic materials that are resistant tothe effects of a polymerization initiator. Examples of such organicphotochromic materials include, but are not limited to, photochromiccompounds encapsulated in metal oxides, such as described in U.S. Pat.Nos. 4,166,043 and 4,367,170 at column 1 line 36 to column 7, line 12,which disclosure is incorporated herein by reference.

The photochromic articles of the present invention can include one ormore photochromic materials (1)-(14) within the substrate and/or one ormore photochromic materials (1)-(14) in one or more coatings, one ormore films, and/or one or more sheets applied over the substrate.

With some embodiments, one or more of the photochromic materials(1)-(14) can be: incorporated, such as dissolved and/or dispersed, intothe substrate, such as by imbibition; polymerized with other componentsfrom which the substrate is prepared, such as with reaction injectionmolding; incorporated or mixed with other components from which thesubstrate is prepared, such as with injection molding of thermoplasticmaterials; and/or incorporated into an at least partial coating or filmapplied to a substrate, such as an at least partially cured polymericcoating or a film applied to one surface of the substrate. The term“imbibition” or “imbibe” is intended to mean and include permeation ofthe photochromic materials individually or with other non-photochromicmaterials into a polymerizate, solvent assisted transfer absorption ofthe photochromic materials into a polymerizate, vapor phase transfer,and other such transfer mechanisms.

With some embodiments, the substrate includes at least one photochromicmaterial (b) (1-14). With some further embodiments, the substratefurther comprises at least one photochromic material (c) that isdifferent from photochromic material (b) (1-14).

In accordance with some embodiments, the photochromic article of thepresent invention further includes a coating that has an at leastpartially cured polymer matrix, applied to at least one surface of thesubstrate. With some further embodiments, the at least partially curedpolymeric coating includes one or more photochromic materials (b)(1-14). With some additional embodiments, the coating further includesat least one other photochromic material (c) that is different fromphotochromic material (b).

As used herein the term “polymeric host” includes and refers to theterms polymeric substrate, polymeric film, and/or polymeric coating.Generally, the polymeric host is such that it allows the photochromicmaterial (b) of the present invention and other optional photochromicmaterials (c) to reversibly transform between their “open” and “closed”forms. With some non-limiting embodiments, the polymer and/or polymericcoating composition used to produce the photochromic articles of thepresent invention includes compositions adapted to provide thermoplasticor thermosetting organic polymeric materials that are described in theKirk-Othmer Encyclopedia of Chemical Technology, Fourth Edition, Volume6, pages 669 to 760, which disclosure is incorporated herein byreference. Such polymeric host materials can be transparent, translucentor opaque; but are transparent with some embodiments. With othernon-limiting contemplated embodiments, the polymeric host material is apolymeric material that upon curing forms an at least partially curedpolymeric coating chosen from polyurethanes, aminoplast resins,poly(meth)acrylates, e.g., polyacrylates and polymethacrylates,polyanhydrides, polyacrylamides, epoxy resins and polysilanes.

With some non-limiting embodiments, the amount of the photochromicmaterial (b) to be applied to or incorporated into a polymeric hostmaterial, such as a polymeric coating composition, of the photochromicarticle of the present invention can vary widely. Typically, asufficient amount is used to produce the desired retained colorationbehind an UV blocking transparency such as a vehicular windshield.Generally such an amount can be described as a behind the UV blockingtransparency activating amount or behind the windshield activatingamount. The particular amount used depends often upon the retainedcoloration desired upon irradiation thereof and upon the method used toincorporate or apply the photochromic material(s) (b). Typically, withsome non-limiting embodiments, the more photochromic material (b)applied or incorporated, the greater is the coloration retained behindthe windshield up to a certain limit. There is a point after which theaddition of any more material will not have a noticeable effect,although more material can be added, if desired.

With some embodiments of the present invention, the UV blockingtransparency is a vehicular windshield. Examples of vehicularwindshields include, but are not limited to, automobile windshields,truck windshields, train windshields, motorcycle windshields, golf cartwindshields, windshields used with aquatic craft (such as wave-runners,boats, and ships), and aircraft windshields.

With some non-limiting embodiments, the amount of the other photochromicmaterial(s) (c) incorporated into a polymeric host material, such as thesubstrate and/or coating, can vary widely. Typically, a sufficientamount is used to produce a photochromic effect discernible to the nakedeye upon activation. Generally such amount can be described as aphotochromic amount. The particular amount used depends often upon theintensity of color desired upon irradiation thereof and upon the methodused to incorporate the photochromic materials. Typically, with somenon-limiting embodiments, the more photochromic material (c)incorporated, the greater is the color intensity up to a certain limit.There is a point after which the addition of any more material will nothave a noticeable effect, although more material can be added, ifdesired.

The relative amounts of the photochromic material (b) or combinations ofphotochromic materials (b) and other optional photochromic material(s)(c) used will vary and depend in part upon the relative intensities ofthe color of the activated species of such materials, the ultimate colordesired, the retained coloration desired and the method of applicationto the host material and/or substrate. In one non-limiting embodiment,the amount of total photochromic material which includes BWSphotochromic materials, other photochromic materials or both,incorporated by imbibition into a photochromic optical host material canvary widely. With some alternate non-limiting embodiments, the amountcan range from about 0.01 to about 2.0, or from 0.05 to about 1.0,milligrams per square centimeter of surface to which the photochromicmaterial is incorporated or applied. The amount of total photochromicmaterial incorporated or applied to the host material can range betweenany combination of these values, inclusive of the recited range, e.g.,0.015 to 1.999 milligrams per square centimeter.

With some further non-limiting embodiments, the total amount ofphotochromic material (b), and optionally (c), incorporated into apolymerizable composition for forming a coating, film or polymerizatecan vary widely. With some embodiments, the amount incorporated canrange from 0.01 to 40 weight percent based on the weight of the solidsin the polymerizable composition. With some alternate non-limitingembodiments, the concentration of photochromic materials ranges from 0.1to 30 weight percent, from 1 to 20 weight percent, from 5 to 15 weightpercent, or from 7 to 14 weight percent. The amount of photochromicmaterial(s) in the coating can range between any combination of thesevalues, inclusive of the recited range, such as from 0.011 to 39.99weight percent.

The various coating compositions described below are well known and aremade with components and according to methods well understood andappreciated to those skilled in the art. Suitable substrates for theapplication of coatings containing the photochromic materials (b) or amixture of the photochromic materials (b) and other optionalphotochromic materials (c) include any type of substrate. Non-limitingexamples include, paper, glass, ceramics, wood, masonry, textiles,metals and organic polymeric materials as host materials.

Photochromic polyurethane coatings that can be used to prepare thephotochromic coated articles of the present invention, with somenon-limiting embodiments, can be produced by the catalyzed oruncatalyzed reaction of an organic polyol component and an isocyanatecomponent in the presence of photochromic compound(s). Materials andmethods for the preparation of polyurethanes are described in Ullmann'sEncyclopedia of Industrial Chemistry, Fifth Edition, 1992, Vol. A21,pages 665 to 716. Non-limiting examples of methods and materials, e.g.,organic polyols, isocyanates and other components, which can be used toprepare the polyurethane coating are disclosed in U.S. Pat. Nos.4,889,413 and 6,187,444B1.

Photochromic aminoplast resin coating compositions that can be used toproduce the photochromic coated articles of the present invention, withsome non-limiting embodiments, can be prepared by combining aphotochromic material with the reaction product of a functionalcomponent(s) having at least two functional groups chosen from hydroxyl,carbamate, urea or a mixture thereof and an aminoplast resin, e.g.,crosslinking agent as described in U.S. Pat. Nos. 4,756,973, 6,432,544B1and 6,506,488.

Photochromic polysilane coating compositions contemplated for use inpreparing the photochromic coated articles of the present invention,with some non-limiting embodiment, are prepared by hydrolyzing at leastone silane monomer such as glycidoxypropyltrimethoxysilane,vinyltrimethoxysilane, methacryloxypropyltrimethoxysilane,tetramethoxysilane, tetraethoxysilane and/or methyltrimethoxysilane andcombining the hydrolyzate with at least one photochromic material asdescribed in U.S. Pat. No. 4,556,605.

Photochromic poly(meth)acrylate coating compositions contemplated foruse in preparing the photochromic coated articles of the presentinvention can be prepared, with some non-limiting embodiments, bycombining photochromic compound(s) with mono-, di- or multi-functional(meth)acrylates as described in U.S. Pat. Nos. 6,025,026 and 6,150,430and WO publication 01/02449 A2.

Polyanhydride photochromic coating compositions that can be used toprepare the photochromic coated articles of the present invention can beprepared with some non-limiting embodiments, by the reaction of ahydroxyl-functional component and a polymeric anhydride-functionalcomponent in a composition including at least one organic photochromicmaterial as described in U.S. Pat. No. 6,432,544B1. Non-limitingexamples of hydroxyl-functional components, anhydride-functionalcomponent(s) and other components that can be used to prepare thepolyanhydride photochromic coatings are disclosed in U.S. Pat. Nos.4,798,745, 4,798,746 and 5,239,012.

Photochromic polyacrylamide coating compositions contemplated for use inpreparing the photochromic coated articles of the present invention,with some non-limiting embodiments, can be prepared by combining aphotochromic component with the free radical initiated reaction productof a polymerizable ethylenically unsaturated composition comprisingN-alkoxymethyl(meth)acrylamide and at least one other copolymerizableethylenically unsaturated monomer as described in U.S. Pat. No.6,060,001. Methods for preparing N-alkoxymethyl(meth)acrylamidefunctional polymer are described in U.S. Pat. No. 5,618,586.

Photochromic epoxy resin coating compositions that can be used toprepare the photochromic coated articles of the present invention, withsome non-limiting embodiments, can be prepared by combining photochromiccompound(s), epoxy resins or polyepoxides and curing agents as describedin U.S. Pat. Nos. 4,756,973 and 6,268,055B1.

With some non-limiting embodiments, the types of photochromic polymericcoatings including the film-forming polymers and the photochromicmaterials (b) of the present invention with or without other optionalphotochromic compounds (c) include paints, e.g., a pigmented liquid orpaste used for the decoration, protection and/or the identification of asubstrate; and inks, e.g., a pigmented liquid or paste used for writingand printing on substrates such as in producing verification marks onsecurity documents, e.g., documents such as banknotes, passport anddrivers' licenses, for which authentication or verification ofauthenticity may be desired.

Application of the polymeric coating can be by any of the methods usedin coating technology, non-limiting examples include, spray coating,spin coating, spin and spray coating, spread coating, curtain coating,dip coating, casting or roll-coating and methods used in preparingoverlays, such as the method of the type described in U.S. Pat. No.4,873,029. The application method selected also depends, with someembodiments, on the thickness of the desired coating.

The thickness of the coatings on/of the photochromic articles of thepresent invention can vary widely. Coatings having a thickness rangingfrom 1 to 50 microns can be applied by the methods used in coatingtechnology. Coatings of a thickness greater than 50 microns can requirethe application of multiple coatings or molding methods typically usedfor overlays. With some non-limiting embodiments, the coating can rangein thickness from 1 to 10,000 microns, or from 5 to 1000, or from 8 to400, or from 10 to 250 microns. The thickness of the polymeric coatingcan range between any combination of these values, inclusive of therecited range, such as a thickness of from 20 to 200 microns.

Following application of the polymeric coating composition to a surfaceof the substrate, with some non-limiting embodiments, the coatingcomposition is at least partially cured. With some further non-limitingembodiments, the methods used for curing the photochromic polymericcoating include the methods used for forming an at least partially curedpolymer. Such methods include radical polymerization, thermalpolymerization, photopolymerization or a combination thereof. Additionalnon-limiting methods include irradiating the coated substrate or atleast partially cured polymer with infrared, ultraviolet, gamma orelectron radiation so as to initiate the polymerization reaction of thepolymerizable components. This can be followed by a heating step.

With some non-limiting embodiments, if required and if appropriate, thesurface of the substrate to be coated is cleaned prior to applying thephotochromic polymeric coating to produce the photochromic article ofthe present invention. This can be done for the purposes of cleaningand/or promoting adhesion of the coating. Effective treatment techniquesfor plastics and glass are known to those skilled in the art.

With some non-limiting embodiments, it may be necessary to apply aprimer to the surface of the substrate before application of thephotochromic polymeric coating. The primer can serve as a barriercoating to prevent interaction of the coating ingredients with thesubstrate and/or vice versa, and/or as an adhesive layer to adhere thephotochromic polymeric coating to the substrate. Application of theprimer can be by any of the methods used in coating technology such as,for example, spray coating, spin coating, spin and spray coating, spreadcoating, dip coating, casting or roll-coating.

The use of protective coatings, some of which can containpolymer-forming organosilanes, as primers to improve adhesion ofsubsequently applied coatings has been described in U.S. Pat. No.6,150,430, which disclosure is incorporated herein by reference. Withsome non-limiting embodiments, non-tintable coatings are used.Non-limiting examples of commercial coating products include SILVUE® 124and HI-GARD® coatings, available from SDC Coatings, Inc. and PPGIndustries, Inc., respectively. In addition, depending on the intendeduse of the coated article, with some non-limiting embodiments, it can benecessary to apply an appropriate protective coating(s), such as anabrasion resistant coating and/or coatings that can serve as oxygenbarriers, onto the exposed surface of the coating composition to preventscratches from the effects of friction and abrasion and interactions ofoxygen with the photochromic materials, respectively.

With some embodiments, the primer and protective coatings areinterchangeable, in which case the same coating composition can be usedas the primer and the protective coating(s). Non-limiting examples ofhardcoats include those based on inorganic materials such as silica,titania and/or zirconia as well as organic hardcoats of the type thatare ultraviolet light curable.

With some non-limiting embodiments, such protective coatings can beapplied to the surface of photochromic articles including at leastpartially cured polymers containing photochromic materials.

With some non-limiting embodiments, the photochromic article of thepresent invention includes a substrate to which a primer is appliedfollowed by the photochromic polymeric coating and a protectivehardcoat. With further non-limiting embodiments, the protective hardcoatis an organosilane hardcoat.

With some additional non-limiting embodiments, other coatings or surfacetreatments, such as a tintable coating, antireflective surface, etc.,can also be, applied to the photochromic articles of the presentinvention. An antireflective coating, such as a monolayer or multilayerof metal oxides, metal fluorides, or other such materials, can bedeposited onto the photochromic articles, e.g., lenses, of the presentinvention through vacuum evaporation, sputtering, or some other method.

With further non-limiting embodiments, the photochromic article thatincludes an at least partially cured polymer and at least onephotochromic material (b) with or without other photochromic material(s)(c) further includes a superstrate, e.g., a film or sheet comprising atleast one organic polymeric material. The photochromic material (b) andoptionally (c) can be located in the superstrate, the at least partiallycured polymer or both. The organic polymeric material of the superstrateis the same as the organic polymeric material described hereinafter asthe substrate or host material. Non-limiting examples of the organicpolymeric materials include thermosetting or thermoplastic materials,for example a thermoplastic polyurethane superstrate.

With still further non-limiting embodiments, the superstrate can beconnected to the polymer surface directly, but does not become thermallyfused to the substrate. With other non-limiting embodiments, thesuperstrate can be adheringly bonded to the substrate by becomingthermally fused with the subsurface of the substrate. General conditionsunder which superstrates are adheringly bonded to a substrate are knownto those skilled in the art. Non-limiting conditions for adheringlylaminating a superstrate to a substrate include heating to a temperatureof from 250-350° F. (121-177° C.) and applying pressure of from 150 to400 pounds per square inch (psiX1034 to 2758 kPa). Sub-atmosphericpressures, e.g., a vacuum, can also be applied to draw down and conformthe superstrate to the shape of the substrate as known to those skilledin the art. Non-limiting examples include applying at a sub-atmosphericpressure within the range of from 0.001 mm Hg to 20 mm Hg (0.13 Pa to2.7 kPa).

After a laminate that includes a superstrate applied to at least onesurface of a substrate is formed, it can further include a protectivecoating or film superposed onto the superstrate. Such a protectivecoating or film, in one non-limiting embodiment, serves as an at leastpartially abrasion resistant coating or film. Non-limiting types ofprotective coatings include the aforedescribed hardcoats that arecurable by ultraviolet radiation and/or that contain organosilanes. Thethickness of the protective coating can vary widely and include theaforementioned range for the photochromic polymeric coatings.Non-limiting types of protective films include those made of organicpolymeric materials such as thermosetting and thermoplastic materials.In another non-limiting embodiment, the protective film is athermoplastic film made of polycarbonate. The thickness of theprotective film or sheet can vary widely. Typically, such films have athickness of from 1 to 20 mils (0.025 to 0.5 mm).

The host material, such as the substrate, of the photochromic material(b) with or without other photochromic material(s) (c) is usually betransparent, but may be translucent or even opaque. The host materialneed only be pervious to that portion of the electromagnetic spectrum,which activates the photochromic material, e.g., that wavelength ofultraviolet (UV) light that produces the open or colored form of thephotochromic and that portion of the visible spectrum that includes theabsorption maximum wavelength of the photochromic in its UV activatedform, e.g., the open form. In one contemplated non-limiting embodiment,the host color should not be such that it masks the color of theactivated form of the photochromic materials, e.g., so the change incolor is readily apparent to the observer. Compatible tints may beapplied to the host material as described in U.S. Pat. No. 5,645,767 incolumn 13, line 59 to column 14, line 3.

With some non-limiting embodiments, the polymeric organic host materialcan be a solid transparent or optically clear material, e.g., materialshaving a luminous transmittance of at least 70 percent and are suitablefor optical applications, such as optical elements chosen from piano andophthalmic lenses, ocular devices such as ophthalmic devices thatphysically reside in or on the eye, e.g., contact lenses and intraocularlenses, windows, automotive transparencies, e.g., windshields, aircrafttransparencies, plastic sheeting, polymeric films, etc.

With some embodiments of the present invention, the substrate of thephotochromic article is an optical element. With some furtherembodiments, the optical element is an ophthalmic lens.

Non-limiting examples of polymeric organic materials which can be usedas a host material for the photochromic materials (b) of the presentinvention with or without other photochromic materials (c) or as asubstrate for a photochromic polymeric coating include:poly(meth)acrylates, polyurethanes, polythiourethanes, thermoplasticpolycarbonates, polyesters, poly(ethylene terephthalate), polystyrene,poly(alpha methylstyrene), copoly(styrene-methyl methacrylate),copoly(styrene-acrylonitrile), polyvinylbutyral, poly(vinyl acetate),cellulose acetate, cellulose propionate, cellulose butyrate, celluloseacetate butyrate, polystyrene or polymers, such as homopolymers andcopolymers prepared by polymerizing monomers chosen from bis(allylcarbonate)monomers, styrene monomers, diisopropenyl benzene monomers,vinylbenzene monomers, e.g., those described in U.S. Pat. No. 5,475,074,diallylidene pentaerythritol monomers, polyol (allyl carbonate)monomers,e.g., diethylene glycol bis(allyl carbonate), vinyl acetate monomers,acrylonitrile monomers, mono- or polyfunctional, e.g., di- ormulti-functional, (meth)acrylate monomers such as(C₁-C₁₂)alkyl(meth)acrylates, e.g., methyl (meth)acrylate, ethyl(meth)acrylate, butyl (meth)acrylate etc.,poly(oxyalkylene(meth)acrylate, poly(alkoxylated phenol(meth)acrylates), diethylene glycol (meth)acrylates, ethoxylatedbisphenol A (meth)acrylates, ethylene glycol (meth)acrylates,poly(ethylene glycol) (meth)acrylates, ethoxylated phenol(meth)acrylates, alkoxytated polyhydric alcohol (meth)acrylates, e.g.,ethoxylated trimethylol propane triacrylate monomers, urethane(meth)acrylate monomers, such as those described in U.S. Pat. No.5,373,033, or a mixture thereof. Further examples of polymeric organichost materials are disclosed in the U.S. Pat. No. 5,753,146, column 8,line 62 to column 10, line 34.

With some embodiments, the substrate of the photochromic article of thepresent invention is an organic polymeric material, and the organicpolymeric material is chosen from poly(C₁-C₁₂ alkyl methacrylates),poly(oxyalkylene dimethacrylates), poly(alkoxylated phenolmethacrylates), cellulose acetate, cellulose triacetate, celluloseacetate propionate, cellulose acetate butyrate, poly(vinyl acetate),poly(vinyl alcohol), poly(vinyl chloride), poly(vinylidene chloride),thermoplastic polycarbonates, polyesters, polyurethanes, poly(ethyleneterephthalate), polystyrene, poly(alpha methylstyrene),copoly(styrene-methylmethacrylate), copoly(styrene-acrylonitrile),polyvinylbutyral or is polymerized from monomers chosen from bis(allylcarbonate)monomers, polyfunctional acrylate monomers, polyfunctionalmethacrylate monomers, diethylene glycol dimethacrylate monomers,diisopropenyl benzene monomers, ethoxylated bisphenol A dimethacrylatemonomers, ethylene glycol bismethacrylate monomers, poly(ethyleneglycol)bismethacrylate monomers, ethoxylated phenol bis methacrylatemonomers, alkoxylated polyhydric alcohol polyacrylate monomers, styrenemonomers, urethane acrylate monomers, glycidyl acrylate monomers,glycidyl methacrylate monomers, diallylidene pentaerythritol monomers ormixtures thereof.

With some further non-limiting embodiments, transparent copolymers andblends of transparent polymers are also suitable as polymeric materials.The host material can be an optically clear polymerized organic materialprepared from a thermoplastic polycarbonate resin, such as thecarbonate-linked resin derived from bisphenol A and phosgene, which issold under the trademark, LEXAN; a polyester, such as the material soldunder the trademark, MYLAR; a poly(methyl methacrylate), such as thematerial sold under the trademark, PLEXIGLAS: polymerizates of apolyol(allyl carbonate)monomer, especially diethylene glycol bis(allylcarbonate), which monomer is sold under the trademark CR-39, andpolymerizates of copolymers of a polyol (allyl carbonate), e.g.,diethylene glycol bis(allyl carbonate), with other copolymerizablemonomeric materials, and copolymers with a polyurethane having terminaldiacrylate functionality, as described in U.S. Pat. Nos. 4,360,653 and4,994,208; and copolymers with aliphatic urethanes, the terminal portionof which contain allyl or acrylyl functional groups, as described inU.S. Pat. No. 5,200,483.

In accordance with some further non-limiting embodiments, thephotochromic materials (b) of the present invention and other optionalphotochromic materials (c) are used with optical organic resin monomersto produce optically clear coatings, films and polymerizates, e.g.,materials suitable for optical applications, such as for example pianoand ophthalmic lenses, windows, and automotive transparencies. Examplesof non-limiting embodiments include polymerizates of optical resins soldby PPG Industries, Inc. as TRIVEX monomers and under the CR-designation,e.g., CR-307, CR-407 and CR-607 and the resins used to prepare hard orsoft contact lenses. Methods for producing both types of contact lensesare disclosed in U.S. Pat. No. 5,166,345, column 11, line 52, to column12, line 52.

Further non-limiting embodiments of optical resins include the resinsused to form soft contact lenses with high moisture content described inU.S. Pat. No. 5,965,630 and extended wear contact lenses described inU.S. Pat. No. 5,965,631.

With some embodiments, the photochromic article of the presentinvention, further includes a phase-separated polymer that includes: amatrix phase that is at least partially ordered; and a guest phase thatis at least partially ordered. The guest phase includes the photochromicmaterial or compound, and the photochromic material or compound is atleast partially aligned with at least a portion of the guest phase. Withsome embodiments: (i) the substrate of the photochromic article includesthe phase-separated polymer; and/or (ii) one or more films or layersresiding over at least a portion of at least one surface of thesubstrate of the photochromic article includes the phase-separatedpolymer.

In accordance with some further embodiments, the photochromic articlefurther includes an interpenetrating polymer network that includes: ananisotropic material that is at least partially ordered: and a polymericmaterial. The anisotropic material includes the photochromic material,and the photochromic material is at least partially aligned with atleast a portion of the anisotropic material. With some additionalembodiments: (i) the substrate of the photochromic article includes theinterpenetrating polymer network; and/or (ii) one or more films orlayers residing over at least a portion of at least one surface of thesubstrate of the photochromic article includes the interpenetratingpolymer network.

As used herein the term “anisotropic” means having at least one propertythat differs in value when measured in at least one different direction.Accordingly, “anisotropic materials” are materials that have at leastone property that differs in value when measured in at least onedifferent direction. Non-limiting examples of anisotropic materials thatcan be included in the photochromic articles of the present inventioninclude, but are not limited to, art-recognized liquid crystal polymers,liquid crystal pre-polymers, liquid crystal monomers, and liquid crystalmesogens.

With some embodiments, the photochromic article includes, such as in afilm or layer thereof: (i) liquid crystal oligomers and/or polymersprepared at least in part from the monomeric mesogenic compounds; and/or(ii) the mesogenic compounds, in each case as disclosed in Table 1 ofU.S. Pat. No. 7,910,019 B2 at columns 43-90 thereof, which disclosure isincorporated herein by reference.

In accordance with some embodiments of the present invention, thephotochromic material is a photochromic-dichroic compound, and can be atleast partially aligned by interaction with the anisotropic material,which itself is at least partially ordered. For example, although notlimiting herein, at least a portion of the photochromic-dichroiccompound can be aligned such that the long-axis of thephotochromic-dichroic compound in the dichroic state is essentiallyparallel to the general direction of the anisotropic material. Further,although not required, the photochromic-dichroic compound can be boundto or reacted with at least a portion of the at least partially orderedanisotropic material.

Methods of ordering, or introducing order into, the anisotropic materialof the photochromic article include, but are not limited to, exposingthe anisotropic material to at least one of a magnetic field, anelectric field, linearly polarized ultraviolet radiation, linearlypolarized infrared radiation, linearly polarized visible radiation, anda shear force. Alternatively or additionally, the anisotropic materialcan be at least partially ordered by aligning at least a portion of theanisotropic material with another material or structure. For example,the anisotropic material can be at least partially ordered by aligningthe anisotropic material with an alignment layer (or an orientationfacility).

By ordering at least a portion of the anisotropic material, it ispossible to at least partially align at least a portion of thephotochromic-dichroic compound that is contained within or otherwiseconnected to the anisotropic material of the photochromic article.Although not required, the photochromic-dichroic compound can be atleast partially aligned while in an activated state. With someembodiments, ordering of the anisotropic material and/or aligning thephotochromic-dichroic compound can occur prior to, during, or afterapplication of a layer containing the photochromic-dichroic compoundover the substrate of the photochromic artice of the present invention.

The photochromic-dichroic compound and the anisotropic material can bealigned and ordered during formation of the photochromic article of thepresent invention, such as during application of a photochromic-dichroiclayer over the substrate. With some embodiments, thephotochromic-dichroic layer can be applied using a coating techniquethat introduces a shear force to the anisotropic material duringapplication, such that the anisotropic material becomes at leastpartially ordered generally parallel to the direction of the appliedshear force. For purposes of non-limiting illustration, a solution ormixture (optionally in a solvent or carrier) including thephotochromic-dichroic compound and the anisotropic material can becurtain coated over the substrate, such that shear forces are introducedto the materials being applied due to relative movement of the surfaceof the substrate with respect to the materials being applied. The shearforces can cause at least a portion of the anisotropic material to beordered in a general direction that is substantially parallel to thedirection of the movement of the surface. As discussed above, byordering at least a portion of the anisotropic material in this manner,at least a portion of the photochromic-dichroic compound can be aligned.In addition, and optionally, by exposing at least a portion of thephotochromic-dichroic compound to actinic radiation during the curtaincoating process, so as to convert the photochromic-dichroic compound toan activated state, at least partial alignment of thephotochromic-dichroic compound while in the activated state can also beachieved.

The photochromic-dichroic compound and the anisotropic material can bealigned and ordered after formation of the photochromic article of thepresent invention, such as after application of a photochromic-dichroiclayer over the substrate. For example, a solution or mixture of thephotochromic-dichroic compound and the anisotropic material (optionallyin a solvent or carrier) can be spin-coated over at least a portion ofthe substrate. Thereafter, at least a portion of the anisotropicmaterial can be ordered, for example, by exposing the anisotropicmaterial to a magnetic field, an electric field, linearly polarizedultraviolet radiation, linearly polarized infrared radiation, linearlypolarized visible radiation, and/or a shear force. Alternatively oradditionally, the anisotropic material can be at least partially orderedby alignment thereof with another material or structure, such as analignment layer.

The photochromic-dichroic compound and the anisotropic material can bealigned and ordered prior to formation of the photochromic article ofthe present invention, such as prior to application of aphotochromic-dichroic layer over the substrate. For example, a solutionor mixture (optionally in a solvent or carrier) of thephotochromic-dichroic compound and the anisotropic material can beapplied over an ordered polymeric sheet to form a layer thereover.Thereafter, at least a portion of the anisotropic material can beallowed to align with the underlying ordered polymeric sheet. Thepolymeric sheet can be subsequently applied over the substrate by, forexample, art-recognized laminating or bonding methods. Alternatively,the ordered photochromic-dichroic layer can be transferred from thepolymeric sheet to/over the substrate by art-recognized method, such ashot stamping.

With some embodiments, the photochromic article includes aphase-separated polymer that includes: a matrix phase; and a guest phasedistributed in the matrix phase. The matrix phase can include an atleast partially ordered liquid crystal polymer. The guest phase caninclude the at least partially ordered anisotropic material and at leasta portion of the photochromic-dichroic compound, which can be at leastpartially aligned. The at least partially aligned photochromic-dichroiccompound can be at least partially aligned by interaction with the atleast partially ordered anisotropic material. With some embodiments, thephotochromic article includes a film or layer residing over at least aportion of at least one surface of the substrate, in which thefilm/layer includes the phase-separate polymer.

With some embodiments, a phase-separating polymer system including, amatrix phase forming material that includes a liquid crystal material,and a guest phase forming material that includes the anisotropicmaterial and the photochromic-dichroic compound, is applied over thesubstrate of the photochromic article of the present invention. Afterapplying the phase-separating polymer system, at least portion of theliquid crystal material of the matrix phase and at least a portion ofthe anisotropic material of the guest phase are at least partiallyordered, such that at least a portion of the photochromic-dichroiccompound is aligned with at least a portion of the at least partiallyordered anisotropic material of the guest phase. Methods of ordering thematrix phase forming material and the guest phase forming material ofthe phase-separating polymer system include, but are not limited to,exposing the applied layer to at least one of: a magnetic field, anelectric field, linearly polarized infrared radiation, linearlypolarized ultraviolet radiation, linearly polarized visible radiation,and a shear force. Alternatively or additionally, ordering the matrixphase forming material and the guest phase forming material can includealignment thereof by interaction with an underlying alignment layer.

After ordering the matrix phase forming material and the guest phaseforming material, the guest phase forming material can be separated fromthe matrix phase forming material by polymerization induced phaseseparation and/or solvent induced phase separation. Although theseparation of the matrix and guest phase forming materials is describedherein in relation to the guest phase forming material separating fromthe matrix phase forming material, it should be appreciated that thislanguage is intended to cover any separation between the two phaseforming materials. That is, this language is intended to coverseparation of the guest phase forming material from the matrix phaseforming material and separation of the matrix phase forming materialfrom the guest phase forming material, as well as, simultaneousseparation of both phase forming materials and any combination thereof.

According to some embodiments, the matrix phase forming material caninclude a liquid crystal material chosen form liquid crystal monomers,liquid crystal pre-polymers, and liquid crystal polymers. The guestphase forming material can, with some embodiments, include a liquidcrystal material chosen from liquid crystal mesogens, liquid crystalmonomers, and liquid crystal polymers and pre-polymers.

With some embodiments, the phase-separating polymer system can include,a mixture of a matrix phase forming material that includes a liquidcrystal monomer, a guest phase forming material that includes liquidcrystal mesogens and the photochromic-dichroic compound. With suchembodiments, causing the guest phase forming material to separate fromthe matrix phase forming material can include polymerization inducedphase-separation. Typically, the liquid crystal monomer of the matrixphase can be polymerized and thereby separated from at least a portionof the liquid crystal mesogens of the guest phase forming material.Examples of polymerization methods include, but are not limited to,photo-induced polymerization and thermally-induced polymerization.

With some further embodiments, the phase-separating polymer system caninclude, a mixture of a matrix phase forming material that includes aliquid crystal monomer, a guest phase forming material that includes alow viscosity liquid crystal monomer having a different functionalityfrom the liquid crystal monomer of the matrix phase, and thephotochromic-dichroic compound. As used herein, the term “low viscosityliquid crystal monomer,” refers to a liquid crystal monomer mixture orsolution that is freely flowing at room temperature. Typically, causingthe guest phase forming material to separate from the matrix phaseforming material includes polymerization induced phase-separation. Forexample, at least a portion of the liquid crystal monomer of the matrixphase can be polymerized under conditions that do not cause the liquidcrystal monomer of the guest phase to polymerize. During polymerizationof the matrix phase forming material, the guest phase forming materialtypically separates from the matrix phase forming material. Thereafter,the liquid crystal monomer of the guest phase forming material can bepolymerized in a separate polymerization process.

The phase-separating polymer system can include, with some embodiments,a solution in at least one common solvent of a matrix phase formingmaterial that includes a liquid crystal polymer, a guest phase formingmaterial that includes a liquid crystal polymer that is different fromthe liquid crystal polymer of the matrix phase forming material, and thephotochromic-dichroic compound. Causing the guest phase forming materialto separate from the matrix phase forming material typically includessolvent induced phase-separation. Typically, at least a portion of thecommon solvent is evaporated from the mixture of liquid crystalpolymers, thereby causing the two phases to separate from each other.

With further embodiments, the photochromic article includes aninterpenetrating polymer network. The at least partially orderedanisotropic material and a polymeric material can form aninterpenetrating polymer network, in which at least a portion of thepolymeric material interpenetrates with at least a portion of the atleast partially ordered anisotropic material. As used herein the term“interpenetrating polymer network” means an entangled combination ofpolymers, at least one of which is cross-linked, that are not bonded toeach other. Thus, as used herein, the term interpenetrating polymernetwork includes semi-interpenetrating polymer networks. For example,see L. H. Sperling, Introduction to Physical Polymer Science, John Wiley& Sons, New York (1986) at page 46. In addition, at least a portion ofthe at least one at least partially aligned photochromic-dichroiccompound can be at least partially aligned with the at least partiallyordered anisotropic material. Still further, the polymeric material canbe isotropic or anisotropic, provided that, on the whole, thephotochromic article (or a photochromic-dichroic layer residing over thesubstrate) is anisotropic.

According to some embodiments, the anisotropic material can be adaptedto allow the photochromic-dichroic compound to switch from a first stateto a second state at a desired rate. In general, conventionalphotochromic compounds can undergo a transformation from one isomericform to another in response to actinic radiation, with each isomericform having a characteristic absorption spectrum. Thephotochromic-dichroic compounds of the photochromic articles of thepresent invention undergo a similar isomeric transformation, with someembodiments. Without intending to be bound by any theory, the rate orspeed at which this isomeric transformation (and the reversetransformation) occurs depends, in part, upon the properties of thelocal environment surrounding the photochromic-dichroic compound (i.e.,the “host”). Although not limiting herein, it is believed based on theevidence at hand that the rate of transformation of thephotochromic-dichroic compound depends, in part, upon the flexibility ofthe chain segments of the host, and more particularly on the mobility orviscosity of the chain segments of the host. Correspondingly it isbelieved, without intending to be bound by any theory, that the rate oftransformation of the photochromic-dichroic compound is generally fasterin hosts having flexible chain segments than in hosts having stiff orrigid chain segments. As such, and in accordance with some embodiments,when the anisotropic material is a host, the anisotropic material can beadapted to allow the photochromic-dichroic compound to transform betweenvarious isomeric states at desired rates. For example, the anisotropicmaterial can be adapted by adjusting the molecular weight and/or thecrosslink density of the anisotropic material.

With some embodiments, the photochromic article includes aphase-separated polymer that includes a matrix phase including a liquidcrystal polymer, and guest phase distributed within the matrix phase.The phase-separated polymer can reside in or define a film or layerresiding over at least a portion of at least one surface of thesubstrate, with some embodiments. The guest phase can include theanisotropic material. Typically, a majority of the photochromic-dichroiccompound can be contained within the guest phase of the phase-separatedpolymer. As previously discussed, because the transformation rate of thephotochromic-dichroic compound depends, in part, on the host in which itis contained, the rate of transformation of the photochromic-dichroiccompound depends, substantially, on the properties of the guest phase,with some embodiments.

In accordance with some further embodiments, the present inventionrelates to a method for producing a photochromic article adapted toretain at least 12 percent of the delta OD measured in the Outdoor Testwhen tested in the Behind the Windshield Test, which method includes:

-   -   a) providing a substrate;    -   b) providing at least one photochromic material (b) as described        previously herein;    -   c) combining the photochromic material together with the        substrate by a method chosen from:        -   i) introducing photochromic material (b) with the starting            materials used to form said substrate;        -   ii) at least partially imbibing photochromic material (b)            into at least one surface of said substrate;        -   iii) applying at least a partial coating of a polymeric            coating composition comprising photochromic material (b) to            at least one surface of the substrate;        -   iv) at least partially connecting a superstrate comprising            photochromic material (b) to at least one surface of said            substrate; or        -   v) combinations of i), ii), ii) or iv).

The introducing, imbibing, coating application, and superstrateconnection steps are, with some embodiments, each independently asdescribed previously herein.

With some further embodiments, the above method further includes addinga photochromic material (c) that is different from photochromic material(b), in step (c) (i), (ii), (iii), (iv) or (v).

With some further embodiments, the above method further includes addinga fixed tint dye in (c) (i), (ii), (iii), (iv) or (v). The fixed tintdye can be used alone or in combination with one or more optionalfurther photochromic materials (c).

The photochromic articles prepared by the aforementioned methods can besubstantially free of ultraviolet radiation absorbing materials adaptedto substantially inhibit the activation of the photochromic material byradiation below 380 nm.

The photochromic articles of the present invention can be used in, as,or in conjunction with various applications including, but not limitedto, optical lenses, such as vision correcting ophthalmic lenses andpiano lenses, face shields, goggles, visors, camera lenses, windows,automotive windshields, aircraft and automotive transparencies, such asT-roofs, sidelights and backlights, polymeric coatings, plastic filmsand sheets, textiles, security verification articles, such as securitydocuments that include verification marks including photochromicmaterial (b) (e.g., documents such as banknotes, passports and drivers'licenses for which authentication or verification of authenticity may bedesired).

The present invention is more particularly described in the followingexamples, which are intended as illustrative only, since numerousmodifications and variations therein will be apparent to those skilledin the art.

EXAMPLES

The present invention is more particularly described in the followingexamples, which are intended as illustrative only, since numerousmodifications and variations therein will be apparent to those skilledin the art.

Part 1 describes the preparation of the primer layer formulation (PLF).Part 2 describes the preparation of the liquid crystal alignmentformulation (LCAF). Part 3 describes the preparation of the coatinglayer formulations (CLFs). Part 4 describes the preparation of thetopcoat layer formulation (TLF). Part 5 describes the procedures usedfor preparing the substrate and subsequent stack of coatings listed inTable 2. Part 6 describes the photochromic performance tests includingthe dichroic ratio, polarization efficiency and optical responsemeasurements.

Part 1—Preparation of the Primer Layer Formulation (PLF)

A PLF was prepared by adding the ingredients according to Table 1 in thelisted order. The solution was stirred at room temperature for two hoursto yield a solution having 46.82 weight % solids as determined after 1hour at 110° C.

TABLE 1 Material Weight, g Polyacrylate polyol¹ 14.69 POLYMEG ® 1000²36.70 DESMODUR ® PL 340³ 48.23 TRIXENE ® BI 7960⁴ 34.39 BYK ®-333⁵ 0.08K-KAT ® 348⁶ 1.00 SILQUEST ® A-187⁷ 3.96 TINUVIN ® 928⁸ 8.07 AROMATIC ®100⁹ 36.00 1-Methyl-2-pyrrolidinone 61.88 ¹Composition D of Example 1 inU.S. Pat. No. 6,187,444, except that in Charge 2, the styrene wasreplaced with methyl methacrylate and triphenyl phosphite was added at0.5% based on total monomer weight ²A polyTHF available from LyondellChemical Co. ³A blocked aliphatic polyisocyanate available from BayerMaterial Science ⁴A blocked aliphatic polyisocyanate available fromBaxenden Chemicals Ltd. ⁵Polyether modified polydimethylsiloxaneavailable from BYK-Chemie, USA ⁶A Bismuth catalyst available from KingIndustries, Inc. ⁷Epoxy functional silane available from MomentivePerformance Materials, Inc. ⁸A UV absorber available from BASF Resins ⁹Amixture of high temperature boiling solvents available from ExxonMobilChemical CompanyPart 2—Preparation of Liquid Crystal Alignment Formulation (LCAF)

A solution of a photo alignment material,Poly[(E)-2-methoxy-4-(3-methoxy-3-oxoprop-1-enyl)phenyl4-(6-(methacryloyloxy)hexyloxy)benzoate], was prepared by adding 6weight percent of the photo alignment material to cyclopentanone, basedon the total weight of the solution.

Part 3—Preparation of the Coating Layer Formulations (CLFs)

Liquid crystal materials used to prepare the CLFs are described below inTable 2. Four liquid crystal coating formulations were prepared asfollows: to a suitable flask containing a mixture of anisole (3.4667 g)and BYK®-346 additive (0.0347 g, available from BYK Chemie, USA), wasadded LCM-1 (1.3 g), LCM-2 (1.3 g), LCM-3 (1.3 g), LCM-4 (1.3 g),4-methoxyphenol (0.0078 g), and IRGACURE® 819 (0.078 g, a photoinitiatoravailable from BASF Resins)

TABLE 2 LCM-1 1-(6-(6-(6-(6-(6-(6-(6-(6-(8-(4-(4-(4-(8-acryloyloxyhexylloxy)benzoyloxy)phenyloxy-carbonyl)phenoxy)octyloxy)-6-oxohexyloxy)-6-oxohexyloxy)-6-oxohexyloxy)-6-oxohexyloxy)-6-oxohexyloxy)-6-oxohexyloxy)-6-oxohexyloxy)-6-oxohexan-1-ol LCM-2 RM257¹ LCM-3 RM105²LCM-4 RM82³ ¹4-(3-acryloyloxypropyloxy)-benzoic acid2-methyl-1,4-phenylene ester, available from EMD Chemicals, Inc., havingthe molecular formula of C₃₃H₃₂O₁₀. ²4-methoxy-3-methylphenyl4-(6-(acryloyloxy)hexyloxy)benzoate, available from EMD Chemicals, Inc.,having the molecular formula of C₂₃H₂₆O₆ ³2-methyl-1,4-phenylenebis(4-(6-(acryloyloxy)hexyloxy)benzoate), available from EMD Chemicals,Inc., having the molecular formula of C₃₉H₄₄O₁₀ nol (0.0078 g), andIRGACURE ® 819 (0.078 g, a photoinitiator available from BASF Resins).To each of the identical liquid crystal coating solutions were added adye corresponding to Dye 1, Dye 2, Dye 3 or Dye 4 as described in Table3 below resulting in four distinct CLFs. The individual dyes were addedin a quantity to yield a dye concentration of 6.3 mmol per 100 g of CLF.The resulting mixtures were stirred for 2 hours at 80° C. and cooled to26° C.

TABLE 3 Coating Layer Formulation Photochromic dye chemical name CLF-1Dye 1 3-(4-fluorophenyl)-3-(4-morpholinophenyl)-6,8-difluoro-10-(4-(4′-trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2- b]pyran CLF-2 Dye 23-(4-butoxyphenyl)-3-(4-fluorophenyl)-6,8-difluoro-10-(4-(4′-trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2- b]pyran CLF-3 Dye 33-(4-butoxyphenyl)-3-(4-methoxyphenyl)-5,7-dichloro-10-(4-(4′-trans-4-pentylcyclohexyl)-11-methoxy-[1,1′-biphenyl]-4-ylcarbamido)phenyl)- 13,13-b]pyrandimethyl-3,13-dihydro-indeno[2′,3′:3, 4]naphtho[1,2- CLF-4 Dye 43-(4-butoxyphenyl)-3-(4-fluorophenyl)-7-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-11-(trifluoromethyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3, 4]naphtho[1,2-b]pyranPart 4: Preparation of the Topcoat Layer Formulation (TLF)

A topcoat layer formulation (TLF) was from the material and quantitiesas described in paragraphs [0505] through [0514] of U.S. patentapplication Ser. No. 13/296,867, Publication No. 2012/0120473A1(published May 17, 2012), the cited portions of which are incorporatedby reference herein. The cited materials were stirred at roomtemperature for two hours in a 50 mL amber glass bottle equipped with amagnetic stir-bar.

Part 5:—Procedures Used for Preparing Substrate and Coating Stacks

Substrate Preparation

Finished single vision lenses (6 base, 70 mm) prepared from CR-39®monomer were used as substrates. Each substrate was cleaned by wipingwith a tissue soaked with acetone and dried with a stream of air andcorona treated by passing on a conveyor belt in Tantec EST SystemsSerial No. 020270 Power Generator HV 2000 series corona treatmentequipment with a high voltage transformer. The substrates were exposedto corona generated by 53.99 KV, 500 Watts while traveling on a conveyorat a belt speed 3 ft/min.

Coating Procedure for the Primer Layer

The PLF was applied to the test substrates by spin-coating on a portionof the surface of the test substrate by dispensing approximately 1.5 mLof the solution. A spin processor from Laurell Technologies Corp.(WS-400B-6NPP/LITE) was used for spin coating the substrates at 976revolutions per minute (rpm) for 4 seconds, followed by 1501 rpm for 2seconds, followed by 2500 rpm for 1 second. Afterwards, the coatedsubstrates were placed in an oven maintained at 125° C. for 60 minutes.The coated substrates were cooled to 26° C. The substrate was coronatreated by passing on a conveyor belt in Tantec EST Systems Serial No.020270 Power Generator HV 2000 series corona treatment equipment with ahigh voltage transformer. The dried primer layers were exposed to coronagenerated by 53.00 KV, 500 Watts while traveling on a conveyor at a beltspeed 3 ft/min.

Coating Procedure for the Liquid Crystal Alignment Layer

The LCAF was applied to the test substrates by spin-coating on a portionof the surface of the test substrate by dispensing approximately 1.0 mLof the solution and spinning the substrates at 800 revolutions perminute (rpm) for 3 seconds, followed by 1,000 rpm for 7 seconds,followed by 2,500 rpm for 4 seconds. A spin processor from LaurellTechnologies Corp. (WS-4006-6NPP/LITE) was used for spin coating.Afterwards, the coated substrates were placed in an oven maintained at120° C. for 30 minutes. The coated substrates were cooled to 26° C.

The dried photoalignment layer on each of the substrates was at leastpartially ordered by exposure to linearly polarized ultravioletradiation. The light source was oriented such that the radiation waslinearly polarized in a plane perpendicular to the surface of thesubstrate. The amount of ultraviolet radiation that each photoalignmentlayer was exposed to was measured using a UV Power Puck™ High energyradiometer from EIT Inc (Serial No. 2066) and was as follows: UVA 0.018W/cm² and 5.361 J/cm²; UVB 0 W/cm² and 0 J/cm²; UVC 0 W/cm² and 0 J/cm²;and UVV 0.005 W/cm² and 1.541 J/cm².

After ordering at least a portion of the photo-orientable polymernetwork, the substrates were cooled to 26° C. and kept covered.

Coating Procedure for the Coating Layer

The CLFs from Part 3 were each spin coated at a rate of 400 revolutionsper minute (rpm) for 6 seconds, followed by 800 rpm for 6 seconds ontothe at least partially ordered photoalignment materials on the testsubstrates. Each coated substrate was placed in an oven at 60° C. for 30minutes. They were then cured under two ultraviolet lamps in the UVCuring Oven Machine designed and built by Belcan Engineering under aNitrogen atmosphere while running on a conveyor belt at 2 ft/min speed.The coated substrates were subjected to a peak intensity of 0.388Watts/cm² of UVA and 0.165 Watts/cm² of UVV and UV dosage of 7.386Joules/cm² of UVA and 3.337 Joules/cm² of UVV. Coated substrates whichwere to receive a topcoat layer were subsequently exposed to coronagenerated by 53.00 KV, 500 Watts while traveling on a conveyor at a beltspeed 3 ft/min. Coated substrates which were not to receive a topcoatlayer were further cured at 105° C. for 3 hours.

Coating Procedure for the Topcoat Layer

The TLF was spin coated at a rate of 1,400 revolutions per minute (rpm)for 7 seconds onto the cured CLF coated substrates. Afterwards thesubstrates were cured under two ultraviolet lamps in the UV Curing OvenMachine designed and built by Belcan Engineering under a Nitrogenatmosphere while running on a conveyor belt at 6 ft/min speed. Thetopcoated substrates were subjected to a peak intensity of 1.887Watts/cm2 of UVA and 0.694 Watts/cm2 of UVV and UV dosage of 4.699Joules/cm2 of UVA and 1.787 Joules/cm2 of UVV. Post curing was completedat 105° C. for 3 hours. Table 4 lists the coating stacks fabricated fortesting below. An “X” in the columns of Table 4 indicates the presenceof the specified layer in a given Example. The CLF from Part 3 used foreach example is listed in the appropriate column.

TABLE 4 Examples with different dye and Coating Stacks Liquid crystalPrimer Alignment Coating Topcoat Layer Layer Layer Layer Example # Dye(PLF) (LCAF) (CLF) (TLF) 1 Dye-1 X CLF-1 2 Dye-2 X CLF-2 3 Dye-3 X CLF-34 Dye-4 X CLE-4 5 Dye-4 X X CLF-4 X 6 Dye-4 X X CLF-4 XPart 6—Photochromic Property TestingPart 6A—Outdoor Simulation (OS) Testing

The photochromic samples prepared as described in Parts 1-5 were testedfor photochromic response in the Outdoor Simulation (OS) Test asdescribed herein on an Advance Bench for Measuring Photochromics (A-BMP)custom made by PPG. Prior to testing on the A-BMP, the photochromicsamples were conditioned by activating and fading as describedhereinafter. The test samples were first exposed to 365 nanometerultraviolet light for approximately 10 minutes at a distance of 14centimeters to activate the photochromic compounds. The UVA (315 to 380nm) irradiance at the sample was measured with a Licor Model Li-1800spectroradiometer and found to be 22.2 watts per square meter. Theactivated samples were then placed under a 500 watt, high intensityhalogen lamp for approximately 10 minutes at a distance of 36centimeters to bleach or inactivate the photochromic compounds. Theilluminance at the sample was measured with the Licor spectroradiometerand found to be 21.4 Klux. The test samples were then kept covered forat least 1 hour prior to testing on an A-BMP.

The A-BMP was fitted with two 150 watt Xenon arc lamps positioned 90°apart (one lamp to provide the amount of UV/VIS light (Lamp 1) and oneto provide the additional contribution of visible light (Lamp 2)). Thecollimated output beams from the Xenon arc lamps were combined anddirected toward the sample cell through a 50/50 beam splitter. Each lampwas filtered and shuttered individually and also shuttered afterblending, prior to entering the temperature controlled sample chamber.The light path from Lamp 1 was directed through a 3 mm Schott KG-2band-pass filter and appropriate neutral density filters thatcontributed to the required UV and partial VIS light irradiance level.The light path from the Lamp 2 was directed through a 3 mm Schott KG-2band-pass filter, a 400 nm cutoff filter and neutral density filters inorder to provide supplemental VIS light illuminance. Proprietarysoftware was used on the A-BMP to control timing, irradiance intensity,sample chamber temperature, shuttering, filter selection and responsemeasurement. A Zeiss spectrophotometer, Model MCS 601, with fiber opticcables for light delivery through the sample was used for response andcolor measurement. The sample within the sample chamber was controlledat a temperature of 23+/−0.2° C. using an FTS™ Systems AirJet™ XEmaintained at 3.5 cfm pressure flow through sample chamber.

Testing was conducted using conditions simulating the averagephotochromic lens response on a wearer when outdoors at the specifiedtemperature or a value of 6.7 Watts/m2 (UVA) integrated between 315 and380 nm and 50 Klux. Response measurements, in terms of change in opticaldensity (□OD) from the unactivated state to the activated or darkenedstate were determined by establishing the initial unactivatedtransmittance, opening the shutter from the Xenon lamp(s) and measuringthe transmittance during activation of the sample at selected intervalsof time. Change in optical density was determined according to theformula: □OD=log 10 (% Tb/% Ta), where % Tb is the percent transmittancein the bleached state, % Ta is the percent transmittance in theactivated state. Optical density measurement can be per specificwavelength or photopic response.

Part 6B—Behind the Windshield (BWS) Response Testing

In a similar fashion, these lenses were tested in the Behind theWindshield (BWS) Test using the A-BMP described above with conditionssimulating photochromic lens response on a wearer inside an automobile.It was determined that the amount of light energy available to activatea photochromic lens on a wearer in an automobile was 0.75 Watts/m2integrated between 380 and 420 nm and 1.7 Klux (kilolumens/m2). Theseconditions were attained using only Lamp 1 with a direct irradiance pathto the sample. In this irradiance path, the 3 mm Schott KG-2 band-passfilter and a simulated windshield was used to attain the irradiancespectral profile. The simulated windshield was prepared by laminating a0.73 mm thick piece of polyvinylbutyrate film from Solutia Inc. betweentwo 2.3 mm thick layers of Solex 97 glass from PPG Industries, Inc. Thesimulated windshield had a total thickness of 5.33 mm. Test results arerecorded below in Table 5.

TABLE 5 Photochromic Performance Test Results ΔOD at 15 λ_(max-vis) ΔOD@ 15 minutes % ΔOD Example # Dye # (nm) minutes (OS) (BWS) Retained 1Dye 1 608 0.54 0.12 22 2 Dye-2 574 0.58 0.14 24 3 Dye-3 582 0.67 0.27 404 Dye-4 449 0.76 0.35 46 5 Dye-4 449 0.79 0.34 43 6 Dye-4 449 0.75 0.3344The results of Table 5 show that Examples 1-6, when under behind thewindshield eyeglass wearer simulating conditions, retain from 22 to 28percent of the ΔOD measured under outdoor simulating conditions.Part 7—Photochromic Performance Tests including Polarization Efficiencyand Optical Response MeasurementsPart 7A—Outdoor Simulation with Polarization (OSP) Testing

Prior to response testing on an optical bench, the substrates wereconditioned by exposing them to 365 nm ultraviolet light for 10 minutesat a distance of 14 cm from the source in order to pre-activate thephotochromic molecules. The UVA irradiance at the sample was measuredwith a Licor Model Li-1800 spectroradiometer and found to be 22.2 wattsper square meter. The samples were then placed under a high intensityhalogen lamp (500 W, 120 V) for approximately 10 minutes at a distanceof 36 cm from the lamp in order to bleach, or inactivate, thephotochromic compound in the samples. The illuminance at the sample wasmeasured with the Licor spectroradiometer and found to be 21.9 Klux. Thesamples were exposed to yellow fluorescent lamps for 30 minutes toprovide further visible light bleaching. The samples were then kept in adark environment for at least 1 hour prior to testing in order to cooland continue to fade back to a ground state.

An optical bench was used to measure the optical properties of thecoated substrates and derive the dichroic ratio and photochromicproperties. Each test sample was placed on the optical bench with anactivating light source (a Newport/Oriel Model 66485 300-Watt Xenon arclamp fitted with a UNIBLITZ® VS-25 high-speed computer controlledshutter that momentarily closed during data collection so that straylight would not interfere with the data collection process, a SCHOTT® 3mm KG-2 band-pass filter, which removed short wavelength radiation,neutral density filter(s) for intensity attenuation and a condensinglens for beam collimation) positioned at a 30° to 35° angle of incidenceto the surface of the test sample. The arc lamp was equipped with alight intensity controller (Newport/Oriel model 68950).

A broadband light source for monitoring response measurements waspositioned in a perpendicular manner to a surface of the test sample.Increased signal of shorter visible wavelengths was obtained bycollecting and combining separately filtered light from a 100-Watttungsten halogen lamp (controlled by a constant voltage powder supply)with a split-end, bifurcated fiber optical cable. Light from one side ofthe tungsten halogen lamp was filtered with a SCHOTT® KG1 filter toabsorb heat and a HOYA® B-440 filter to allow passage of the shorterwavelengths. The other side of the light was either filtered with aSCHOTT® KG1 filter or unfiltered. The light was collected by focusinglight from each side of the lamp onto a separate end of the split-end,bifurcated fiber optic cable, and subsequently combined into one lightsource emerging from the single end of the cable. A 4″ or 6″ light pipewas attached to the single end of the cable to insure proper mixing. Thebroad band light source was fitted with a UNIBLITZ® VS-25 high-speedcomputer controlled shutter that momentarily opened during datacollection.

Polarization of the light source was achieved by passing the light fromthe single end of the cable through a Moxtek, PROFLUX® Polarizer held ina computer driven, motorized rotation stage (Model M-061-PD fromPolytech, PI or equivalent). The monitoring beam was set so that the onepolarization plane) (0°) was perpendicular to the plane of the opticalbench table and the second polarization plane) (90°) was parallel to theplane of the optical bench table. The samples were run in air, at 23°C.±0.1° C. maintained by a temperature controlled air cell.

To align each sample, a second polarizer was added to the optical path.The second polarizer was set to 90° of the first polarizer. The samplewas placed in an air cell in a self-centering holder mounted on arotation stage. A laser beam (Coherent—ULN 635 diode laser) was directedthrough the crossed polarizers and sample. The sample was rotated (in 3°steps as coarse moves and in 0.1° steps as fine moves) to find theminimum transmission. At this point the sample was aligned eitherparallel or perpendicular to the Moxtek polarizer and the secondpolarizer as well as the diode laser beam was removed from the opticalpath. The sample was aligned within ±0.5° prior to any activation.

To conduct the measurements, each test sample was exposed to 6.7 W/m² ofUVA from the activating light source for 10 to 20 minutes to activatethe photochromic compound. An International Light Research Radiometer(Model IL-1700) with a detector system (Model SED033 detector, B Filter,and diffuser) was used to verify exposure at the beginning of each day.Light from the monitoring source that was polarized to the 0°polarization plane was then passed through the coated sample and focusedinto a 1″ integrating sphere, which was connected to an OCEAN OPTICS®S2000 spectrophotometer or equivalent using a single function fiberoptic cable. The spectral information, after passing through the sample,was collected using OCEAN OPTICS® OOIBase32 and OOIColor software, andPPG propriety software. While the photochromic material was activated,the position of the polarizing sheet was rotated back and forth topolarize the light from the monitoring light source to the 90°polarization plane and back. Data was collected for approximately 600 to1200 seconds at 5-second intervals during activation. For each test,rotation of the polarizers was adjusted to collect data in the followingsequence of polarization planes: 0°, 90°, 90°, 0°, etc.

Absorption spectra were obtained and analyzed for each test sample usingthe Igor Pro software (available from WaveMetrics). The change in theabsorbance in each polarization direction for each test sample wascalculated by subtracting out the 0 time (i.e., unactivated) absorptionmeasurement for the samples at each wavelength tested. Averageabsorbance values were obtained in the region of the activation profilewhere the photochromic response of the photochromic compound wassaturated or nearly saturated (i.e., the regions where the measuredabsorbance did not increase or did not increase significantly over time)for each sample by averaging absorbance at each time interval in thisregion. The average absorbance values in a predetermined range ofwavelengths corresponding λmax-vis+/−5 nm were extracted for the 0° and90° polarizations, and the dichroic ratio for each wavelength in thisrange was calculated by dividing the larger average absorbance by thesmall average absorbance. For each wavelength extracted, 5 to 100 datapoints were averaged. The average dichroic ratio for the photochromiccompound was then calculated by averaging these individual dichroicratios.

The change in optical density (ΔOD) from the bleached state to thedarkened state was determined as described in Part 6A.

Polarization efficiency (PE) is calculated by taking the fully activatedΔOD values from the 0 and 90 degree polarization orientations at the 90degree lambda max (90 degree peak absorption position), converting thosedelta absorbance values to transmission (1/10^(ΔOD)) and then performingthe following calculation:PE=100*((T ₀ −T ₉₀)/(T ₀ +T ₉₀))Perfect polarization would be 100%, no polarization=0%, and partialpolarization ranges from >0 to <100% in this calculation. The basis forthis calculation comes from Optics, Eugene Hecht, 4^(th) Edition,Addison Wesley, 2002, Chapter 8. Transmission was substituted forintensity in this calculation.

The fade half life (T½) is the time interval in seconds for the ΔOD ofthe activated form of the photochromic compounds in the test samples toreach one half the ΔOD measured after fifteen minutes, or aftersaturation or near-saturation was achieved, at room temperature afterremoval of the source of activating light, e.g., by closing the shutter.

Part 7B—Behind the Windshield with Polarization (BWSP) Response Testing

Behind the windshield response testing with polarization efficiency andoptical response is performed in a similar manner as Part 7A—OutdoorSimulation with polarization (OSP) Testing, with the followingmodifications: The temperature of the temperature controlled air cellwas set to 27+/−0.2° C. The temperature dwell time before exposure toUV-VIS radiation was 2-3 minutes. The relative humidity in the air cellwas 20-28% with some variation within due to room humidity. Theactivation time was 15 minutes. The activation exposure (irradiancelevel) was set to 1.00+−0.02 W/m² over an integrated wavelength range of380 to 420 nm using a WG295, KG-2 (3 mm), Solar Green/PVB windshieldfilter, and various neutral density filters and lamp powers to obtainsaid exposure level. The visible illuminance (380 to 780 nm) wasmeasured at 4800+/−200 lux, though this level was not controlled. Theirradiance was measured using an ILT950 spectral radiometer fromInternational Light. The output data from the spectral radiometer waspost processed for wavelength correction, such that the wavelengthaccuracy of the spectral radiometer was <+/−1 nm. Test results arerecorded below in Table 6.

TABLE 6 Photochromic and Polarization Performance Test Results ΔOD @ 15ΔOD at 15 Dichroic λ_(max-vis) minutes minutes Ratio % PE % PE % PEExample # Dye # (nm) (OSP) (BWSP) (DR) (OSP) (BWSP) Retained 1 Dye 1 6080.52 0.11 5.6 88.1 19.9 22% 2 Dye 2 574 0.56 0.14 5.6 89.3 23.3 26% 3Dye 3 582 0.62 0.27 5.2 94.3 48.9 52% 4 Dye-4 449 0.76 0.34 5.0 97.560.3 62% 5 Dye-4 449 0.74 0.34 5.3 98.0 61.5 63% 6 Dye-4 449 0.73 0.324.8 94.0 54.3 57%The results of Table 6 show that Examples 1-6, when under behind thewindshield eyeglass wearer simulating conditions, retained from 22 to63% percent of the polarization efficiency (% PE) measured under outdoorwith polarization simulating conditions.

The present invention has been described with reference to specificdetails of particular embodiments thereof. It is not intended that suchdetails be regarded as limitations upon the scope of the inventionexcept insofar as to the extent that they are included in theaccompanying claims.

What is claimed is:
 1. A photochromic article comprising: (a) asubstrate; and (b) at least one photochromic material adapted to changefrom an unactivated form to an activated form by exposure to radiationsubstantially in the wavelength range from 380 to 450 nanometers whenmeasured over a range of from 380 to 700 nanometers, said photochromicarticle being adapted to retain at least 12 percent of the delta ODmeasured in the Outdoor Test when tested in the Behind the WindshieldTest, wherein photochromic material (b) is chosen from at least one of,(1) a photochromic material chosen from at least one fluoranthenoxazinerepresented by the following Formula (I),

wherein for Formula (I), (a) R₁ is chosen from hydrogen, C₁-C₈ alkyl,C₃-C₇ cycloalkyl, phen(C₁-C₄)alkyl, naphth(C₁-C₄)alkyl, allyl,acrylyloxy(C₂-C₆)alkyl, methacrylyloxy(C₂-C₆)alkyl, C₂-C₄acyloxy(C₂-C₆)alkyl, carboxy(C₂-C₆)alkyl, cyano(C₂-C₆)alkyl,hydroxy(C₂-C₆)alkyl, triarylsilyl, triarylsilyloxy,tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, C₁-C₆ alkoxy(C₂-C₄)alkyl or(C₂H₄O)_(r)CH₃, wherein r is an integer from 1 to 6, (b) R₂ is chosenfrom C₁-C₅ alkyl, C₁-C₅ alkoxy, nitro, cyano, C₁-C₈ alkoxycarbonyl,C₁-C₄ acyloxy, halo, C₁-C₄ monohaloalkyl or C₁-C₄ polyhaloalkyl; saidhalo substituents being chloro, fluoro, iodo or bromo and q is 0, 1 or2, (c) R₃ and R₄ are each independently chosen from C₁-C₅ alkyl, benzyl,phenyl, mono- or di-substituted phenyl, said phenyl substituents beingC₁-C₅ alkyl or C₁-C₅ alkoxy; or R₃ and R₄ taken together form a groupchosen from a cyclic ring of from 5 to 8 carbon atoms which includes thespiro carbon atom, (d) R₅ is chosen from hydrogen, —CH₂Q and —C(O)W,wherein Q is halogen, hydroxy, benzoyloxy, C₁-C₆ alkoxy, C₂-C₆ acyloxy,amino, C₁-C₆ mono-alkylamino, C₁-C₆ dialkylamino, morpholino,piperidino, 1-indolinyl, pyrrolidyl, triarylsilyl, triarylsilyloxy,tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, or the group, —OCH(R₈)Z; W is thegroup, —OCH(R₈)Z, or an unsubstituted, mono-substituted, ordi-substituted heterocyclic ring containing 5 to 6 ring atoms, whichring includes as the hetero atom a nitrogen atom alone or one additionalhetero atom of nitrogen or oxygen; wherein Z is —CN, —CF₃, halogen,—C(O)R₈, or —COOR₈, R₈ is hydrogen or C₁-C₆ alkyl; said heterocyclicring substituents being chosen from C₁-C₆ alkyl or C₁-C₆ alkoxy; or W is—OR₉ or wherein R₉ is chosen from hydrogen, allyl, C₁-C₆ alkyl, phenyl,mono(C₁-C₆)alkyl substituted phenyl, mono(C₁-C₆)alkoxy-substitutedphenyl, phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkyl substitutedphenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl,C₁-C₆ alkoxy(C₂-C₄)alkyl, or C₁-C₆ haloalkyl; and R₁₀ and R₁₁ are eachindependently chosen from hydrogen, C₁-C₆ alkyl, C₅-C₇ cycloalkyl,phenyl, mono- or di-substituted phenyl, or R₁₀ and R₁₁ together with thenitrogen atom form a mono- or di-substituted or unsubstitutedheterocyclic ring containing from 5 to 6 ring atoms, which ring includesas the hetero atom said nitrogen atom alone or one additional heteroatom of nitrogen or oxygen, said phenyl and heterocyclic ringsubstituents being C₁-C₆ alkyl or C₁-C₆ alkoxy, and each of said halogenor halo groups in this part (d) being fluoro or chloro, and (e) each R₆and R₇ is independently chosen for each occurrence from aryl,mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkoxyaryl, mono(C₁-C₆)alkylaryl,di(C₁-C₆)alkylaryl, bromoaryl, chloroaryl, fluoroaryl, C₃-C₇cycloalkylaryl, C₃-C₇ cycloalkyl, C₃-C₇ cycloalkyloxy, C₃-C₇cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇ cycloalkyloxy(C₁-C₆)alkoxy,aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy, aryloxy, aryloxy(C₁-C₆)alkyl,aryloxy(C₁-C₆)alkoxy, mono- or di(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, diarylamino, N—(C₁-C₆)alkylpiperazino,N-arylpiperazino, aziridino, indolino, piperidino, arylpiperidino,morpholino, thiomorpholino, tetrahydroquinolino, tetrahydroisoquinolino,pyrryl, C₁-C₆ alkyl, C₁-C₆ bromoalkyl, C₁-C₆ chloroalkyl, C₁-C₆fluoroalkyl, C₁-C₆ alkoxy, mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy,methacryloxy, bromo, chloro or fluoro; and q is independently chosen foreach occurrence form the integer 0, 1, or 2, provided that for Formula(I) at least one of and less than all of R₁, R₂, R₃, R₄, R₅, R₆, and R₇is in each case independently an L-Group as defined below; (2) aphotochromic material chosen from at least one naphthopyran representedby the following Formula (II),

wherein for Formula (II), (a) R₁₂ is hydrogen or a C₁-C₆ alkyl, (b) R₁₃is hydrogen or the group, —C(O)J, J being —OR₁₅ or —N(R₁₀)R₁₁, whereinR₁₅ is hydrogen, allyl, C₁-C₆ alkyl, phenyl, C₁-C₆ monoalkyl substitutedphenyl, C₁-C₆ monoalkoxy substituted phenyl, phenyl(C₁-C₃)alkyl, C₁-C₆monoalkyl substituted phenyl(C₁-C₃)alkyl, C₁-C₆ monoalkoxy substitutedphenyl(C₁-C₃)alkyl, C₁-C₆ alkoxy(C₂-C₄)alkyl, or C₁-C₆ monohaloalkyl,and wherein R₁₀ and R₁₁ are the same as described hereinbefore in(1)(d), and said halo substituent being chloro or fluoro, (c) R₁₄ is—OR₉, —N(R₁₀)R₁₁, wherein R₉, R₁₀ and R₁₁ are the same as describedhereinbefore in (1)(d), or the group, —C(O)V; wherein V is C₁-C₆ alkyl,phenyl, C₁-C₆ mono- or C₁-C₆ di-alkyl substituted phenyl, C₁-C₆ mono- orC₁-C₆ di-alkoxy substituted phenyl, C₁-C₆ alkoxy, phenoxy, C₁-C₆ mono-or C₁-C₆ di-alkyl substituted phenoxy, C₁-C₆ mono- or C₁-C₆ di-alkoxysubstituted phenoxy, C₁-C₆ alkylamino, phenylamino, C₁-C₆ mono- or C₁-C₆di-alkyl substituted phenylamino, or C₁-C₆ mono- or C₁-C₆ di-alkoxysubstituted phenylamino, and said halo substituent being chloro, fluoroor bromo, provided that either R₁₂ or R₁₃ is hydrogen; and (d) B and B′are each independently chosen from, (i) mono-T-substituted phenyl,wherein the group T is represented by the formula,-G[(OC₂H₄)_(x)(OC₃H₆)_(y)(OC₄H₈)_(z)]G′[(OC₂H₄)_(x)(OC₃H₆)_(y)(OC₄H₈)_(z)]G′ wherein -G being chosen from—C(O)— or —CH₂—, G′ being chosen from C₁-C₃ alkoxy or a polymerizablegroup, x, y and z each being independently chosen from a number between0 and 50, and the sum of x, y and z being between 2 and 50, (ii) anunsubstituted, mono-, di-, or tri-substituted aryl group, phenyl ornaphthyl, (iii) 9-julolidinyl or the unsubstituted, mono- ordi-substituted heteroaromatic group chosen from pyridyl furanyl,benzofuran-2-yl, benzofuran-3-yl, thienyl, benzothien-2-yl,benzothien-3-yl, dibenzofuranyl, dibenzothienyl, carbazoyl,benzopyridyl, indolinyl or fluorenyl, each of said aryl andheteroaromatic substituents in (ii) and (iii) being independently chosenfrom hydroxy, —C(O)U, wherein U being hydroxy, C₁-C₆ alkyl, C₁-C₆alkoxy, phenyl, mono-substituted phenyl, amino, mono(C₁-C₆)alkylamino,di-(C₁-C₆)alkylamino, morpholino, piperidino or pyrrolidyl; aryl,mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkoxyaryl, mono(C₁-C₆)alkylaryl,di(C₁-C₆)alkylaryl, chloroaryl, fluoroaryl, C₃-C₇ cycloalkylaryl, C₃-C₇cycloalkyl, C₃-C₇ cycloalkyloxy, C₃-C₇ cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇cycloalkyloxy(C₁-C₆)alkoxy, aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy,aryloxy, aryloxy(C₁-C₆)alkyl, aryloxy(C₁-C₆)alkoxy, mono- ordi-(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- ordi-(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi-(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi-(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, diarylamino, piperazino, N—(C₁-C₆)alkylpiperazino,N-arylpiperazino, aziridino, indolino, piperidino, morpholino,thiomorpholino, tetrahydroquinolino, tetrahydroisoquinolino, pyrrolidyl,C₁-C₆ alkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, C₁-C₆ alkoxy,mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy, methacryloxy, bromo, chloro orfluoro, said aryl being chosen from phenyl or naphthyl, (iv) anunsubstituted or mono-substituted group chosen from pyrazolyl,imidazolyl, pyrazolinyl, imidazolinyl, pyrrolinyl, phenothiazinyl,phenoxazinyl, phenazinyl or acridinyl, each of said substituents beingindependently chosen from C₁-C₆ alkyl, C₁-C₆ alkoxy, phenyl, fluoro,chloro or bromo, (v) a monosubstituted phenyl, said phenyl having asubstituent located at the para position being —(CH₂)_(r)— or—O—(CH₂)_(r)—, wherein r being chosen from the integer 1, 2, 3, 4, 5 or6, said substituent being connected to an aryl group which is a memberof another photochromic material, (vi) a group represented by one of thefollowing formulas,

 wherein A is independently chosen in each formula from methylene oroxygen and D being independently chosen in each formula from oxygen orsubstituted nitrogen, provided that when D is substituted nitrogen, A ismethylene; said nitrogen substituents being chosen from hydrogen, C₁-C₆alkyl, or C₂-C₆ acyl; each R₂₀ being independently chosen for eachoccurrence in each formula from C₁-C₆ alkyl, C₁-C₆ alkoxy, hydroxy,chloro or fluoro; R₁₈ and R₁₉ each being independently chosen in eachformula from hydrogen or C₁-C₆ alkyl; and q being chosen from theinteger 0, 1 or 2; (vii) C₁-C₆ alkyl, C₁-C₆ chloroalkyl, C₁-C₆fluoroalkyl, C₁-C₆ alkoxy(C₁-C₄)alkyl, C₃-C₆ cycloalkyl,mono(C₁-C₆)alkoxy(C₃-C₆)cycloalkyl, mono(C₁-C₆)alkyl(C₃-C₆)-cycloalkyl,chloro(C₃-C₆)cycloalkyl, fluoro(C₃-C₆)cyclo-alkyl or C₄-C₁₂bicycloalkyl; (viii) a group represented by the following formula,

 wherein N is chosen from hydrogen or C₁-C₄ alkyl and M is chosen froman unsubstituted, mono-, or di-substituted group chosen from naphthyl,phenyl, furanyl, or thienyl; each of said group substituents beingindependently chosen from C₁-C₄ alkyl, C₁-C₄ alkoxy, fluoro, or chloro,or (ix) B and B′ taken together form fluoren-9-ylidene, mono-, ordi-substituted fluoren-9-ylidene or a group being independently chosenfrom saturated C₃-C₁₂ spiro-monocyclic hydrocarbon rings, saturatedC₇-C₁₂ spiro-bicyclic hydrocarbon rings or saturated C₇-C₁₂spiro-tricyclic hydrocarbon rings; each of said fluoren-9-ylidenesubstituents being independently chosen from C₁-C₄ alkyl, C₁-C₄ alkoxy,fluoro or chloro, provided that for Formula (II) at least one of andless than all of R₁₂, R₁₃, R¹⁴, B, and B′ is in each case independentlysaid L-Group as defined below; (3) a photochromic material chosen fromat least one naphthopyran represented by the following Formula (III),

wherein for Formula (III), (a) R₂₁ is the group, —C(O)W or CH₂Q,described hereinbefore in (1)(d), (b) R₂₂ and each R₂₃ are independentlychosen for each occurrence from hydroxy, NH₂ or N(R)H; wherein R isC₁-C₆ alkyl or aryl and n is chosen from the integers 0, 1, 2, or 3, and(c) B and B′ are each independently chosen from the groups describedhereinbefore in (2)(d), provided that for Formula (III) at least one ofand less than all of R₂₁, R₂₂, R₂₃, B, and B′ is in each caseindependently said L-Group as defined below; (4) a photochromic materialchosen from at least one naphthopyran represented by the followingFormula (IV),

wherein for Formula (IV), (a) R₅ is independently chosen from the groupsdescribed hereinbefore in (1)(d), (b) R₂₄ and R₂₅ are each chosen fromhydrogen or an amino group defined hereinafter, provided that R₂₄ andR₂₅ are not both hydrogen, said amino group being selected from, (i)—N(R₁₆)R₁₇, R₁₆ and R₁₇ each being independently chosen from hydrogen,C₁-C₈ alkyl, aryl, furanyl, benzofuran-2-yl, benzofuran-3-yl, thienyl,benzothien-2-yl, benzothien-3-yl, dibenzofuranyl, dibenzothienyl,benzopyridyl, fluorenyl, C₁-C₈ alkylaryl, C₃-C₂₀ cycloalkyl, C₄-C₂₀bicycloalkyl, C₅-C₂₀ tricycloalkyl or C₁-C₂₀ alkoxyalkyl and said arylgroup being phenyl or naphthyl, (ii) a nitrogen containing ringrepresented by the following formula,

 wherein each Y being independently chosen for each occurrence from—CH₂—, —CH(R₂₆)—, —C(R₂₆)(R₂₆)—, —CH(aryl)-, —C(aryl)₂- or—C(R₂₆)(aryl)-; X being —Y—, —O—, —S—, —S(O)—, —S(O₂)—, —NH—, —N(R₂₆)—or —N(aryl)-; R₂₆ being C₁-C₆ alkyl; said aryl group being phenyl ornaphthyl, m being chosen from the integer 1, 2 or 3 and p being chosenfrom the integer 0, 1, 2 or 3; provided that when p is 0, X is Y, (iii)a group represented by one of the following formulas,

 wherein each R₂₈, R₂₉ and R₃₀ being chosen independently for eachoccurrence in each formula from hydrogen, C₁-C₅ alkyl, phenyl ornaphthyl; or the groups R₂₈ and R₂₉ together form a ring of 5 to 8carbon atoms; R₂₇ being chosen independently for each occurrence fromC₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro or chloro and q being chosen from theinteger 0, 1 or 2, (iv) unsubstituted, mono- or di-substituted C₄-C₁₈spirobicyclic amine, or (v) unsubstituted, mono- or di-substitutedC₄-C₁₈ spirotricyclic amine; said substituents for (iv) and (v) beingindependently chosen for each occurrence from aryl, C₁-C₆ alkyl, C₁₋₆alkoxy or phenyl(C₁-C₆)alkyl, and (c) B and B′ are each independentlychosen from the groups described hereinbefore in (2)(d), provided thatfor Formula (IV) at least one of and less than all of R₅, R₂₄, R₂₅, Band B′ is in each case independently said L-Group as defined below; (5)a photochromic material chosen from at least one phenanthropyranrepresented by at least one of the following Formula (VA) and Formula(VB),

wherein for Formula (VA) and Formula (VB), (a) R₃₁ is the group R₅,described hereinbefore in (1)(d), (b) R₃₂ is hydrogen, C₁-C₆ alkyl,C₁-C₆ alkoxy, C₃-C₇ cycloalkyl, pyridyl, phenyl, mono-substituted ordi-substituted phenyl, said phenyl substituents being C₁-C₆ alkyl, C₁-C₆alkoxy, hydroxy, amino, chloro, or fluoro, (c) each R₃₃ is independentlychosen for each occurrence from chloro, fluoro, amino, C₁-C₆monoalkylamino, —N(R₁₀)R₁₁, which was described hereinbefore in (1)(d),phenyl, C₁-C₆ alkyl, or —OR₃₄, wherein R₃₄ is hydrogen, C₁-C₆ alkyl,allyl, or acetyl, and q is the integer 0, 1, or 2, and (d) B and B′ areeach independently chosen from the groups described hereinbefore in(2)(d), provided that for Formula (VA) and Formula (VB) at least one ofand less than all of R₃₁, R₃₂, R₃₃, B, and B′ is in each caseindependently said L-Group as defined below; (6) a photochromic materialchosen from at least one fluoranthenopyran represented by the followingFormula (VI),

wherein for Formula (VI), (a) R₃₅ and R₃₆ are each independently chosenfor each occurrence from hydroxy, aryl, mono(C₁-C₆)alkoxyaryl,di(C₁-C₆)alkoxyaryl, mono(C₁-C₆)alkylaryl, di(C₁-C₆)alkylaryl,bromoaryl, chloroaryl, fluoroaryl, C₃-C₇ cycloalkylaryl, C₃-C₇cycloalkyl, C₃-C₇ cycloalkyloxy, C₃-C₇ cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇cycloalkyloxy(C₁-C₆)alkoxy, aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy,aryloxy, aryloxy(C₁-C₆)alkyl, aryloxy(C₁-C₆)alkoxy, mono- ordi(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- anddi(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, C₁-C₆ alkyl, C₁-C₆ bromoalkyl, C₁-C₆chloroalkyl, C₁-C₆ fluoroalkyl, C₁-C₆ alkoxy,mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy, methacryloxy, bromo, chloro,fluoro, amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino,mono- or di-(C₁-C₆)alkyl substituted phenylamino or mono- ordi-(C₁-C₆)alkoxy substituted phenylamino, and q is the integer 0, 1 or2, (b) R₅ is independently chosen from the groups described hereinbeforein (1)(d), and (c) B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d), provided that for Formula (VI)at least one of and less than all of R₅, R₃₅, R₃₆, B, and B′ is in eachcase independently said L-Group as defined below; (7) a photochromicmaterial chosen from at least one naphthopyran represented by thefollowing Formula (VII),

wherein for Formula (VII), (a) R₃₇ and R₃₈ together form an oxo group orR₃₇ and R₃₈ each are independently chosen for each occurrence fromhydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl, phenyl, mono- ordi-substituted phenyl, benzyl, mono-substituted benzyl, naphthyl, mono-or di-substituted naphthyl, C₄-C₁₂ bicycloalkyl, linear or branchedC₃-C₁₂ alkenyl, C₁-C₆ alkoxy carbonyl(C₁-C₆)alkyl,methacryloxy(C₁-C₆)alkyl, acryloxy(C₁-C₆)alkyl, C₁-C₄acyloxy(C₁-C₆)alkyl, C₁-C₆ alkoxy(C₁-C₆)alkyl or the unsubstituted,mono- or di-substituted heteroaromatic groups pyridyl, furanyl,benzofuran-2-yl, benzyfuran-3-yl, thienyl, benzothien-2-yl,benzothien-3-yl, dibenzofuranyl, dibenzothienyl, carbazolyl,benzopyridyl and indolyl, each of said phenyl, benzyl, naphthyl andheteroaromatic group substituents being C₁-C₆ alkyl, C₁-C₆ alkoxy,morpholino, di(C₁-C₆)alkylamino, chloro or fluoro, (b) R₃₉ is chosenfrom C₁-C₆ alkyl, C₁-C₆ alkoxy, chloro, fluoro, phenyl, mono- anddi-substituted phenyl, benzyl or mono-substituted benzyl, C₃-C₇cycloalkyl, aryloxy, di(C₁-C₆)alkylamino, morpholino, thiomorpholino,piperidino, pyridyl, tetrahydroquinolino, isoquinolino, aziridino,diarylamino, N—(C₁-C₆)alkyl piperizino or N-aryl piperizino, wherein thearyl groups are phenyl or naphthyl, each of said phenyl and benzylsubstituents being C₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro or chloro, and q isthe integer 0, 1 or 2, (c) I is oxygen or —N(R₄₀)—, wherein R₄₀ ishydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl, vinyl, C₁-C₅ acyl,phenyl, mono- or di-substituted phenyl, benzyl, mono-substituted benzyl,C₁-C₄ alkoxycarbonyl(C₁-C₆)alkyl, methacryloxy(C₁-C₆)alkyl,acryloyloxy(C₁-C₆)alkyl, phenyl(C₁-C₆)alkyl, naphthyl, C₄-C₁₂bicycloalkyl, C₂-C₄ acyloxy or the unsubstituted or substitutedheteroaromatic groups pyridyl, furanyl, benzofuran-2-yl,benzofuran-3-yl, thienyl, benzothien-2-yl, benzothien-3-yl,dibenzofuranyl, dibenzothienyl, carbazolyl, benzopyridyl or indolyl,each of said phenyl, benzyl and heteroaromatic group substituents beingC₁-C₆ alkyl or C₁-C₆ alkoxy, (d) K is oxygen, —N(R₄₀)— or —C(R₄₁)(R₄₂)—,wherein R₄₁ and R₄₂ are each hydrogen, C₁-C₆ alkyl or C₃-C₇ cycloalkyl,and (e) B and B′ are each independently chosen from the groups describedhereinbefore in (2)(d), provided that for Formula (VII) at least one ofand less than all of R₃₇, R₃₈, R₃₉, B, and B′ is in each caseindependently said L-Group as defined below; (8) a photochromic materialchosen from at least one naphthopyran represented by the followingFormula (VIII),

wherein for Formula (VIII), (a) R₄₃ and R₄₄ together form an oxo groupor R₄₃ and R₄₄ are both hydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl,phenyl, mono-substituted phenyl, benzyl or mono-substituted benzyl eachof said phenyl and benzyl group substituents being C₁-C₆ alkyl or C₁-C₆alkoxy, (b) R₄₅ is hydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, or thegroup, CH(B)B′, wherein B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d), (c) R₄₆ is hydrogen, C₁-C₆alkyl, or C₃-C₇ cycloalkyl; (d) each R₄₇ is C₁-C₆ alkyl, C₁-C₆ alkoxy,chloro or fluoro, and q is the integer 0, 1, or 2, and (e) B and B′ areeach independently chosen from the groups described hereinbefore in(2)(d), provided that for Formula (VIII) at least one of and less thanall of R₄₃, R₄₄, R₄₅, R₄₆, R₄₇, B, and B′ is in each case independentlysaid L-Group as defined below; (9) a photochromic material chosen fromat least one naphthopyran represented by the following Formulas (IXA),(IXB), (IXC), (IXD), (IXE), (IXF), (IXG) and (IXH),

wherein independently for each of Formulas (IXA), (IXB), (IXC), (IXD),(IXE), (IXF), (IXG) and (IXH), (a) R₄₃ and R₄₄ are in each caseindependently chosen from groups described hereinbefore in (8)(a); (b)R₄₇ in each case is independently chosen from groups describedhereinbefore in (8)(d), and q is in each case independently as describedhereinbefore in (8)(d), and (c) B and B′ are each independently chosenfrom the groups described hereinbefore in (2)(d), provided thatindependently for each of Formulas (IXA), (IXB), (IXC), (IXD), (IXE),(IXF), (IXG) and (IXH), at least one of and less than all of R₄₃, R₄₄,R₄₇, B, and B′ is in each case independently said L-Group as definedbelow; (10) a photochromic material chosen from at least onenaphthopyran represented by the following Formulae (XA) and Formula(XB),

wherein independently for each of Formula (XA) and Formula (XB), (a)Ring A′ is chosen from, (i) an unsubstituted, mono-substituted ordi-substituted heterocyclic ring chosen from benzothieno, benzofurano orindolo, the 2,3 or 3,2 positions of said heterocyclic ring being fusedto the i, j or k side of said naphthopyran represented by Formula (XA)or said heterocyclic ring is fused to the f side of said naphthopyranrepresented by Formula (XB), or (ii) an unsubstituted, mono-substitutedor di-substituted indeno group fused to the i, j or k side of saidnaphthopyran represented by Formula (XA) or to the f side of saidnaphthopyran represented by Formula (XB); each of said heterocyclic ringand indeno group substituents being C₁-C₆ alkyl, C₅-C₇ cycloalkyl, C₁-C₆alkoxy, —N(R₁₀)R₁₁, which was described hereinbefore in (1)(d), chloro,fluoro, benzo, mono- or di-substituted benzo group fused to the benzoportion of the benzothieno, benzofurano, indeno or indolo moiety, saidbenzo substitutent being C₁-C₆ alkyl, C₅-C₇ cycloalkyl, C₁-C₆ alkylmono-substituted (C₅-C₇)cycloalkyl, C₁-C₆ alkoxy, —N(R₁₀)R₁₁, which wasdescribed hereinbefore in (1)(d), chloro or fluoro, (b) R₄₈ is chosenfrom, (i) —C(O)W′, W′ being —OR₉ or —N(R₁₀)R₁₁, wherein said groups weredescribed hereinbefore in (1)(d), or (ii) —C(R₅₁)₂X′, wherein X′ is —CN,chloro, fluoro, hydroxy, benzoyloxy, C₁-C₆ alkoxy, C₂-C₆ acyloxy, amino,C₁-C₆ mono-alkylamino, C₁-C₆ dialkylamino, morpholino, piperidino,1-indolinyl, pyrrolidyl, or trimethylsilyloxy, R₅₁ is hydrogen, C₁-C₆alkyl, phenyl or naphthyl, and each of said phenyl and heterocyclic ringsubstituents in this part (b)(i) and (ii) being C₁-C₆ alkyl or C₁-C₆alkoxy, (c) R₄₉ is hydrogen, C₁-C₆ alkyl, the mono-, di- ortri-substituted aryl groups phenyl or naphthyl, said aryl substituentsbeing C₁-C₆ alkyl, C₁-C₆ alkoxy, chloro or fluoro, or (d) each R₅₀ ischloro, fluoro, C₁-C₆ alkyl, C₁-C₆ alkoxy, phenyl, naphthyl, phenoxy,naphthoxy or the group, —N(R₁₀)R₁₁, described hereinbefore in (1)(d),and q is selected from the integers 0, 1 or 2 in said naphthopyranrepresented by Formula (XA), or each R₅₀ is chloro, fluoro, phenoxy,naphthoxy or the group, —N(R₁₀)R₁₁, and p is selected from the integers0, 1, 2 or 3 in said naphthopyran represented by Formula (XB), and (e) Band B′ are each independently chosen from the groups describedhereinbefore in (2)(d), provided that independently for each of Formula(XA) and Formula (XB) at least one of and less than all of R₄₈, R₄₉,R₅₀, B, and B′ is in each case independently said L-Group as definedbelow; (11) a photochromic material chosen from at least oneindenonaphthopyran represented by the following Formula (XIA) andFormula (XIB),

wherein independently for each of Formula (XIA) and Formula (XIB), (a)Ring A″ is an unsubstituted, mono-substituted or di-substitutedheterocyclic ring chosen from faro, thieno, benzothieno, benzofurano orindolo, the 2,3 or 3,2 positions of said heterocyclic ring being fusedto the g, h or i side of Formula (XIB) or to the n, o or p side ofFormula (XIA), said heterocyclic ring substituents being C₁-C₆ alkyl,C₅-C₇ cycloalkyl, C₁-C₆ alkoxy, chloro or fluoro, (b) R₅₂ and R₅₃together form an oxo group, a Spiro heterocyclic group having 2 oxygenatoms and from 3 to 6 carbon atoms including the spirocarbon atom, orR₅₂ and R₅₃ are each hydrogen, hydroxy, C₁-C₆ alkyl, C₃-C₇ cycloalkyl,allyl, phenyl, mono-substituted phenyl, benzyl, mono-substituted benzyl,chloro, fluoro or the group, —C(O)W″, wherein each W″ is hydroxy, C₁-C₆alkyl, C₁-C₆ alkoxy, phenyl, mono-substituted phenyl, amino,mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, morpholino, piperidino orpyrrolidyl; or R₅₂ and R₅₃ are each the group, the group, —N(R₁₀)R₁₁,described hereinbefore in (1)(d), or —OR₅₄, wherein each R₅₄ is C₁-C₆alkyl, phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkyl substitutedphenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl,C₁-C₆ alkoxy(C₂-C₄)alkyl, C₃-C₇ cycloalkyl, mono(C₁-C₄)alkyl substitutedC₃-C₇ cycloalkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, allyl, thegroup, —CH(R₅₅)X″, wherein each R₅₅ is hydrogen or C₁-C₃ alkyl, each X″is —CN, —CF₃, or —COOR₅₅, or each R₅₄ is the group, —C(O)Y′, whereineach Y′ is hydrogen, C₁-C₆ alkyl, C₁-C₆ alkoxy, the unsubstituted, mono-or di-substituted aryl groups, phenyl or naphthyl, phenoxy, mono- ordi-(C₁-C₆)alkyl substituted phenoxy, mono- or di-(C₁-C₆)alkoxysubstituted phenoxy, amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino,phenylamino, mono- or di-(C₁-C₆)alkyl substituted phenylamino or mono-or di-(C₁-C₆)alkoxy substituted phenylamino, each of said phenyl, benzylor aryl group substituents being C₁-C₆ alkyl or C₁-C₆ alkoxy, (c) R₄₇ ineach case is independently chosen from groups described hereinbefore in(8)(d), and q is in each case independently as described hereinbefore in(8)(d), and (d) B and B′ are each independently chosen from the groupsdescribed hereinbefore in (2)(d), provided that independently for eachof Formula (XIA) and Formula (XIB) at least one of and less than all ofR₄₇, R₅₂, R₅₃, B, and B′ is in each case independently said L-Group asdefined below; (12) a photochromic material chosen from at least oneindenonaphthopyran represented by Formula (XIIA) and Formula (XIIB),

wherein independently for each of Formula (XIIA) and Formula (XIIB), (a)Ring A″ is independently as described hereinbefore in (11)(a), whereinRing A″ is fused to the g, h or i side of Formula (XIIB) or to the n, oor p side of Formula (XIIA), (b) R₅₆ is hydrogen, hydroxy, bromo, fluoroor chloro and R₅₇ is the group, —CH(V)₂, wherein V′ is —CN or —COOR₅₈,and each R₅₈ is hydrogen, C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxysubstituted phenyl(C₁-C₃)alkyl or the unsubstituted, mono- ordi-substituted aryl groups phenyl or naphthyl, or R₅₇ is the group,—CH(R₅₉)Y″, wherein R₅₉ is hydrogen, C₁-C₆ alkyl or the unsubstituted,mono- or di-substituted aryl groups phenyl or naphthyl, and Y″ is—COOR₅₈, —COR₅₉, or —CH₂OR₆₀, wherein R₅₉ is hydrogen, C₁-C₆ alkyl, theunsubstituted, mono- or di-substituted aryl groups phenyl or naphthyl,amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino, mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, diphenylamino, mono- or di-(C₁-C₆)alkylsubstituted diphenylamino, mono- or di-(C₁-C₆)alkoxy substituteddiphenylamino, morpholino, or piperidino; R₆₀ is hydrogen, —COR₅₈, C₁-C₆alkyl, C₁-C₃ alkoxy(C₁-C₆)alkyl, phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkylsubstituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substitutedphenyl(C₁-C₃)alkyl, or the unsubstituted, mono- or di-substituted arylgroups phenyl or naphthyl, each of said aryl group substituents beingC₁-C₆ alkyl or C₁-C₆ alkoxy, or (c) R₅₆ and R₅₇ together form the group,═C(V′)₂ or ═C(R₅₉)W′″, wherein W′″ is —COOR₅₈ or —COR₅₉; (d) R₄₇ in eachcase is independently chosen from groups described hereinbefore in(8)(d), and q is in each case independently as described hereinbefore in(8)(d), and (e) B and B′ are each independently chosen from the groupsdescribed hereinbefore in (2)(d), provided that independently for eachof Formula (XIIA) and Formula (XIIB) at least one of and less than allof R₄₇, R₅₆, R₅₇, B, and B′ is in each case independently said L-Groupas defined below; (13) a photochromic material chosen from at least oneindenonaphthopyran represented by the following Formula (XIII),

wherein for Formula (XIII), (a) R₆₁′ is independently for each q ischosen for each occurrence from, (i) C₁-C₆ alkyl or C₁-C₆ alkoxy,perfluoroalkyl, halogen, cyano, ester; (ii) —SR₆₇, where R₆₇ is chosenfrom C₁-C₆ alkyl, aryl, mono- or di-substituted aryl, said aryl groupbeing phenyl or naphthyl and each of said aryl substitutents beingchosen independently from C₁-C₆ alkyl, C₁-C₆ alkoxy or halogen; and(iii) an amino group described hereinbefore in (4)(b)(i), (ii), (iii),(iv) or (v) with regard to Formula (IV), where q is chosen from theinteger 0, 1, 2 or 3, (b) R₆₁ is chosen from C₁-C₆ alkyl or C₁-C₆alkoxy, perfluoroalkyl and halogen; (c) R₆₂ and R₆₃ are eachindependently chosen from, (i) hydrogen, hydroxy, amino, mono- ordi-substituted amino, C₁-C₁₂ alkyl, C₃-C₁₂ alkylidene, C₂-C₁₂alkylidyne, vinyl, C₃-C₇ cycloalkyl, C₁-C₆ alkoxyalkyl, allyl, benzyl,mono-substituted benzyl, chloro, fluoro or —C(O)W″, wherein W″ being thesame group described hereinbefore in (11)(b); said amino substituents in(c)(i) being C₁-C₆ alkyl, phenyl, benzyl or naphthyl; each of saidbenzyl substituents being C₁-C₆ alkyl or C₁-C₆ alkoxy, (ii) anunsubstituted, mono- di- or tri-substituted group chosen from phenyl,naphthyl, phenanthryl, pyrenyl, quinolyl, isoquinolyl, benzofuranyl,thienyl, benzothienyl, dibenzofuranyl, dibenzothienyl, carbazolyl orindolyl; each of said group substituents in (c)(ii) being chosenindependently for each occurrence from chloro, fluoro, C₁-C₆ alkyl orC₁-C₆ alkoxy, (iii) a monosubstituted phenyl, said phenyl having asubstituent located at the para position being as described hereinbeforein (2)(d)(v), (iv) —OR₆₇, R₆₇ being chosen from C₁-C₆ alkyl, C₁-C₆ acyl,phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl, C₁-C₆alkoxy(C₂-C₄)alkyl, C₃-C₇ cycloalkyl, mono(C₁-C₄)alkyl substituted C₃-C₇cycloalkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, allyl, triarylsilyl,triarylsilyloxy, tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy,tri(C₁-C₆)alkoxysilyl, tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆alkoxy)silyl, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy,di(C₁-C₆)alkoxy(C₁-C₆ alkyl) silyl, di(C₁-C₆)alkoxy(C₁-C₆alkyl)silyloxy, benzoyl, mono-substituted benzoyl, naphthoyl ormono-substituted naphthoyl; each of said benzoyl and naphthoylsubstituents being independently chosen from C₁-C₆ alkyl or alkoxy; orR₆₇ being —CH(R₆₈)Q″, wherein R₆₈ being chosen from hydrogen or C₁-C₃alkyl and Q″ being chosen from —CN, —CF₃, or —COOR₆₈; or R₆₇ being—C(O)V″, wherein V″ being chosen from hydrogen, C₁-C₆ alkoxy, phenoxy,mono- or di-(C₁-C₆)alkyl substituted phenoxy, mono- or di-(C₁-C₆)alkoxysubstituted phenoxy, an unsubstituted, mono- or di-substituted arylgroup, phenyl or naphthyl, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, phenylamino, mono- or di-(C₁-C₆)alkyl substitutedphenylamino, or mono- or di-(C₁-C₆)alkoxy substituted phenylamino; eachof said aryl group substituents being independently chosen from C₁-C₆alkyl or C₁-C₆ alkoxy, (v) —CH(Q′″)₂, Q″ being chosen from —CN or—COOR₆₉ and R₆₉ being chosen from hydrogen, C₁-C₆ alkyl,phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl or an unsubstituted,mono- or di-substituted aryl group, phenyl or naphthyl; each of saidaryl group substituents being independently chosen from C₁-C₆ alkyl orC₁-C₆ alkoxy, (vi) —CH(R₇₀)G″, R₇₀ being chosen from hydrogen, C₁-C₆alkyl or an unsubstituted, mono- or di-substituted aryl group, phenyl ornaphthyl, and G″ being chosen from —COOR₆₉, —COR₇₁ or —CH₂OR₇₂, whereinR₇₁ being chosen from hydrogen, C₁-C₆ alkyl, an unsubstituted, mono- ordi-substituted aryl group, phenyl or naphthyl, amino,mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino, mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, diphenylamino, mono- or di(C₁-C₆)alkylsubstituted diphenylamino, mono- or di(C₁-C₆)alkoxy substituteddiphenylamino, morpholino or piperidino; R₇₂ being chosen from hydrogen,—C(O)R₆₉, C₁-C₆ alkyl, C₁-C₃ alkoxy(C₁-C₆)alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl or an unsubstituted,mono- or di-substituted aryl group, phenyl or naphthyl, each of saidaryl group substituents being independently chosen from C₁-C₆ alkyl orC₁-C₆ alkoxy, (vii) the group T being the same as described hereinbeforein (2)(d)(i), or (viii) R₆₂ and R₆₃ together form an oxo group or asubstituted or unsubstituted spiro-carbocyclic ring containing 3 to 6carbon atoms or a substituted or unsubstituted spiro-heterocyclic groupcontaining 1 or 2 oxygen atoms and 3 to 6 carbon atoms including thespirocarbon atom, said spiro-carbocyclic ring and spiro-heterocyclicgroup being annellated with 0, 1 or 2 benzene rings, said substituentsbeing hydrogen or C₁-C₆ alkyl, (d) R₆₄ is chosen from hydrogen, C₁-C₆alkyl, aryl, perfluoroalkyl, halogen, or the group R_(a) chosen from,(i) —OR₇₃, R₇₃ being chosen from phenyl(C₁-C₃)alkyl, C₁-C₆ alkyl,mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxysubstituted phenyl(C₁-C₃)alkyl, C₁-C₆ alkoxy(C₂-C₄)alkyl, C₃-C₇cycloalkyl, mono(C₁-C₄)alkyl substituted C₃-C₇ cycloalkyl, C₁-C₆chloroalkyl, C₁-C₆ fluoroalkyl, allyl or —CH(R₆₈)Q″ described in (c)(i),or (ii) an amino group as described hereinbefore in (4)(b)(i), (ii),(iii), (iv) or (v), (e) R₆₅ is chosen from hydrogen, C₁-C₆ alkyl, aryl,perfluoroalkyl, halogen, or R_(a), said R_(a) being the same asdescribed hereinbefore in (d), (f) R₆₆ is chosen from hydrogen, C₁-C₆alkyl or R_(a), where R_(a) is as described hereinbefore in (d), or (g)R₆₅ and R₆₆ together form one of the following Formulas,

wherein J′ and K′ being independently chosen for each occurrence in eachformula from oxygen or —N(R₁₅)—, where R₁₅ is as described hereinbeforein (2)(b), R₁₈ and R₁₉ each being as described hereinbefore in(2)(d)(vi), and (h) B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d), provided that for Formula(XIII) at least one of and less than all of R₆₁, R_(61′), R₆₂, R₆₃, R₆₄,R₆₅, R₆₆, B, and B′ is in each case independently said L-Group asdefined below; (14) a photochromic material chosen from at least oneindenonaphthopyran represented by the following Formula (XIV),

wherein for Formula (XIV), (a) R₇₄ and R₇₅ are each independently asdescribed hereinbefore with regard to R₆₂ and R₆₃ in (13)(c), (b) eachR₇₆ is independently chosen for each occurrence fromdi(C₁-C₆)alkylamino, dicyclohexylamino, diphenylamino, piperidyl,morpholinyl, pyridyl, a group T, described hereinbefore in (2)(d)(i) orgroup —C(O)W″ described hereinbefore in (11)(b) and q is the integer 0,1, or 2; or when q is 2, and the R₇₆ substituents are adjacent, eachpair of substituents independently forms a substituted or unsubstitutedfused carbocyclic or heterocyclic ring chosen from benzo, pyridino,pyrazino, pyrimidino, furano, dihydrofurano, 1,3-dioxolo, 1,4-dioxolo,1,3-dioxino, 1,4-dioxino, thiopheno, benzofuro, benzothieno, indolo, orindeno, the substituents of said fused carbocyclic or heterocyclic ringbeing chosen from halogen, C₁-C₆ alkyl, C₁-C₆ alkoxy, amino, mono- ordi-substituted amino, said amino substituents being chosen from C₁-C₆alkyl, phenyl, benzyl or naphthyl; said first R₇₆ ring being fused tothe o, p or q side and said second R₇₆ ring being fused to the g, h, ori side of the indenonaphthopyran, and (c) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d),provided that for Formula (XIV) at least one of and less than all ofR₇₄, R₇₅, R₇₆, B, and B′ is in each case independently said L-Group asdefined below; wherein said L-Group is independently in each case achiral or achiral lengthening group represented by the following Formula(XV),—(S₁)_(c)-(Q₁-(S₂)_(d))_(d′)-(Q₂-(S₃)_(e))_(e′)-(Q₃-(S₄)_(f))_(f′)—S₅—P  (XV)wherein, (i) Q₁, Q₂, and Q₃ are each independently for each occurrence adivalent group chosen from, an unsubstituted or a substituted aromaticgroup, an unsubstituted or a substituted alicyclic group, and anunsubstituted or a substituted heterocyclic group, wherein eachsubstituent is independently chosen from, a group represented by P,liquid crystal mesogens, halogen, poly(C₁-C₁₈ alkoxy), C₁-C₁₈alkoxycarbonyl, C₁-C₁₈ alkylcarbonyl, C₁-C₁₈ alkoxycarbonyloxy,aryloxycarbonyloxy, perfluoro(C₁-C₁₈)alkoxy,perfluoro(C₁-C₁₈)alkoxycarbonyl, perfluoro(C₁-C₁₈)alkylcarbonyl,perfluoro(C₁-C₁₈)alkylamino, di-(perfluoro(C₁-C₁₈)alkyl)amino,perfluoro(C₁-C₁₈)alkylthio, C₁-C₁₈ alkylthio, C₁-C₁₈ acetyl, C₃-C₁₀cycloalkyl, cycloalkoxy, a straight-chain or branched C₁-C₁₈ alkyl groupthat is mono-substituted with cyano, halo, or C₁-C₁₈ alkoxy, orpoly-substituted with halo, and a group comprising one of the followingformulae: -M(T)_((t-1)) and -M(OT)_((t-1)), wherein M is chosen fromaluminum, antimony, tantalum, titanium, zirconium and silicon, T ischosen from organofunctional radicals, organofunctional hydrocarbonradicals, aliphatic hydrocarbon radicals and aromatic hydrocarbonradicals, and t is the valence of M, (ii) c, d, e, and f are eachindependently an integer selected from 0 to 20, inclusive; and S₁, S₂,S₃, S₄, and S₅ are each independently for each occurrence a spacer unitchosen from: (1) —(CH₂)_(g)—, —(CF₂)_(h)—, —Si(Z)₂(CH₂)_(g)—,—(Si(CH₃)₂O)_(h)—, wherein Z is independently chosen for each occurrencefrom hydrogen, C₁-C₁₈ alkyl, C₃-C₁₀ cycloalkyl and aryl; g isindependently chosen for each occurrence from 1 to 20; h is a wholenumber from 1 to 16 inclusive; (2) —N(Z)—, —C(Z)═C(Z)—, —C(Z)═N—,—C(Z′)—C(Z′)— or a single bond, wherein Z is independently chosen foreach occurrence from hydrogen, C₁-C₁₈ alkyl, C₃-C₁₀ cycloalkyl and aryl,and Z′ is independently chosen for each occurrence from C₁-C₁₈ alkyl,C₃-C₁₀ cycloalkyl and aryl; and (3) —O—, —C(O)—, —N═N—, —S—, —S(O)—,—S(O)(O)—, —(O)S(O)—, —(O)S(O)O—, —O(O)S(O)O—, or straight-chain orbranched C₁-C₂₄ alkylene residue, said C₁-C₂₄ alkylene residue beingunsubstituted, mono-substituted by cyano or halo, or poly-substituted byhalo, provided that when two spacer units comprising heteroatoms arelinked together the spacer units are linked so that heteroatoms are notdirectly linked to each other, and provided that when S₁ is linked tosaid photochromic material and S₅ is linked to P, S₁ and S₅ are eachlinked so that two heteroatoms are not directly linked to each other;(iii) P is chosen from: hydroxy, amino, C₂-C₁₈ alkenyl, C₂-C₁₈ alkynyl,azido, silyl, siloxy, silylhydride, (tetrahydro-2H-pyran-2-yl)oxy, thio,isocyanato, thioisocyanato, acryloyloxy, methacryloyloxy,2-(acryloyloxy)ethylcarbamyl, 2-(methacryloyloxy)ethylcarbamyl,aziridinyl, allyloxycarbonyloxy, epoxy, carboxylic acid, carboxylicester, acryloylamino, methacryloylamino, aminocarbonyl, C₁-C₁₈ alkylaminocarbonyl, aminocarbonyl(C₁-C₁₈)alkyl, C₁-C₁₈ alkyloxycarbonyloxy,halocarbonyl, hydrogen, aryl, hydroxy(C₁-C₁₈)alkyl, C₁-C₁₈ alkyl, C₁-C₁₈alkoxy, amino(C₁-C₁₈)alkyl, C₁-C₁₈ alkylamino, di-(C₁-C₁₈)alkylamino,C₁-C₁₈ alkyl(C₁-C₁₈)alkoxy, C₁-C₁₈ alkoxy(C₁-C₁₈)alkoxy, nitro,poly(C₁-C₁₈)alkyl ether, (C₁-C₁₈)alkyl(C₁-C₁₈)alkoxy(C₁-C₁₈)alkyl,polyethyleneoxy, polypropyleneoxy, ethylenyl, acryloyl,acryloyloxy(C₁-C₁₈)alkyl, methacryloyl, methacryloyloxy(C₁-C₁₈)alkyl,2-chloroacryloyl, 2-phenylacryloyl, acryloyloxyphenyl,2-chloroacryloylamino, 2-phenylacryloylaminocarbonyl, oxetanyl,glycidyl, cyano, isocyanato(C₁-C₁₈)alkyl, itaconic acid ester, vinylether, vinyl ester, a styrene derivative, main-chain and side-chainliquid crystal polymers, siloxane derivatives, ethyleneiminederivatives, maleic acid derivatives, fumaric acid derivatives,unsubstituted cinnamic acid derivatives, cinnamic acid derivatives thatare substituted with at least one of methyl, methoxy, cyano and halogen,or substituted or unsubstituted chiral or non-chiral monovalent ordivalent groups chosen from steroid radicals, terpenoid radicals,alkaloid radicals and mixtures thereof, wherein the substituents areindependently chosen from C₁-C₁₈ alkyl, C₁-C₁₈ alkoxy, amino, C₃-C₁₀cycloalkyl, C₁-C₁₈ alkyl(C₁-C₁₈)alkoxy, fluoro(C₁-C₁₈)alkyl, cyano,cyano(C₁-C₁₈)alkyl, cyano(C₁-C₁₈)alkoxy or mixtures thereof, or P is astructure having from 2 to 4 reactive groups, or P is an unsubstitutedor substituted ring opening metathesis polymerization precursor, or P isa substituted or unsubstituted photochromic compound; and (iv) d′, e′and f′ are each independently chosen from 0, 1, 2, 3, and 4, providedthat a sum of d′+e′+f′ is at least 2, wherein said photochromic articlefurther comprises a phase-separated polymer comprising, a matrix phasethat is at least partially ordered, and a guest phase that is at leastpartially ordered, wherein said guest phase comprises said photochromicmaterial and said photochromic material is at least partially alignedwith at least a portion of said guest phase.
 2. The photochromic articleof claim 1 wherein the photochromic article is adapted to retain atleast 20 percent of the delta OD measured in the Outdoor Test whentested in the Behind the Windshield Test.
 3. The photochromic article ofclaim 1 wherein the photochromic article is adapted to retain at least25 percent of the delta OD measured in the Outdoor Test when tested inthe Behind the Windshield Test.
 4. The photochromic article of claim 1wherein, (1) for said photochromic material chosen from at least onefluoranthenoxazine represented by Formula (I), (a) R₁ is chosen fromC₁-C₈ alkyl, phen(C₁-C₄)alkyl, acrylyloxy(C₂-C₆)alkyl,methacrylyloxy(C₂-C₆)alkyl, carboxy(C₂-C₆)alkyl, tri(C₁-C₆)alkylsilyl,tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silylor di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, (b) R₂ is chosen from C₁-C₅alkyl, C₁-C₅ alkoxy, C₁-C₈ alkoxycarbonyl, C₁-C₄ acyloxy, halo, C₁-C₄monohaloalkyl or C₁-C₄ polyhaloalkyl; said halo substituents beingchloro or fluoro, and q is 0, 1 or 2, (c) R₃ and R₄ are eachindependently chosen from C₁-C₅ alkyl, phenyl; or R₃ and R₄ takentogether form a group chosen from a cyclic ring of from 5 to 8 carbonatoms which includes the Spiro carbon atom, (d) R₅ is chosen from —CH₂Qand —C(O)W, wherein Q is halogen, hydroxy, C₁-C₆ alkoxy,tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, or the group, —OCH(R₈)Z; W is thegroup, —OCH(R₈)Z, morpholino or piperidino; Z is —COOR₈, R₈ is C₁-C₆alkyl; or W is —OR₉ or —N(R₁₀)R₁₁, wherein R₉ is chosen from C₁-C₆ alkylor phenyl; and R₁₀ and R₁₁ are each independently chosen from hydrogen,C₁-C₆ alkyl, or R₁₀ and R₁₁ together with the nitrogen atom form aheterocyclic ring chosen from morpholino or piperidino; and each of saidhalogen or halo groups in this part (d) being fluoro or chloro, and (e)each R₆ and R₇ is independently chosen for each occurrence from aryl,mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkylamino, piperidino, morpholino,C₁-C₆ alkoxy, or fluoro; and q is independently chosen for eachoccurrence form the integer 0, 1, or 2, provided that for Formula (I)one or two of R₁, R₂, R₃, R₄, R₅, R₆, and R₇ is in each caseindependently said L-Group; (2) for said photochromic material chosenfrom at least one naphthopyran represented by Formula II, (a) R₁₂ ishydrogen, (b) R₁₃ is hydrogen or the group, —C(O)J, J being —OR₁₅ or—N(R₁₀)R₁₁, wherein R₁₅ is C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl, or C₁-C₆alkoxy(C₂-C₄)alkyl, R₁₀ and R₁₁ are the same as described hereinbeforein (1)(d), (c) R₁₄ is hydrogen, C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl, C₁-C₆alkoxy(C₂-C₄)alkyl, C₅-C₇ cycloalkyl, or the group, —C(O)V; wherein V isC₁-C₆ alkyl, C₁-C₆ alkoxy or C₁-C₆ alkylamino, and (d) B and B′ are eachindependently chosen from, (i) an unsubstituted, mono-, di-, ortri-substituted phenyl group; (ii) a mono-substituted heteroaromaticgroup chosen from benzofuran-2-yl, benzothien-3-yl, dibenzofuranyl, orcarbazoyl; each of said phenyl and heteroaromatic substituents in (i)and (ii) being independently chosen from —C(O)U, wherein U being C₁-C₆alkyl, C₁-C₆ alkoxy, mono-(C₁-C₆)alkylamino, di-(C₁-C₆)alkylamino,morpholino, or piperidino; or amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, piperidino, morpholino or fluoro, (iii) anunsubstituted or mono-substituted phenothiazinyl, said substituentsbeing C₁-C₆ alkyl or C₁-C₆ alkoxy; (iv) a monosubstituted phenyl, saidphenyl having a substituent located at the para position being—O—(CH₂)_(r)—, wherein r being chosen from the integer 3 or 6, saidsubstituent being connected to an aryl group which is a member ofanother photochromic material; (v) said group represented by one of thefollowing Formulas,

 wherein A is independently chosen in each formula from methylene oroxygen and D is independently chosen in each formula from oxygen orsubstituted nitrogen, provided that when D is substituted nitrogen, A ismethylene; said nitrogen substituents being C₁-C₆ alkyl; each R₂₀ beingindependently chosen for each occurrence in each formula from C₁-C₆alkyl or C₁-C₆ alkoxy; R₁₈ and R₁₉ each being independently chosen ineach formula from hydrogen or C₁-C₆ alkyl; and q being chosen from theinteger 0, 1 or 2, (vi) C₁-C₆ alkyl, C₃-C₆ cycloalkyl, or C₄-C₁₂bicycloalkyl, (vii) said group represented by the following Formula,

 wherein N is hydrogen and M is an unsubstituted, mono-, ordi-substituted phenyl; each of said group substituents beingindependently chosen from C₁-C₄ alkoxy or fluoro, or (viii) B and B′taken together form fluoren-9-ylidene, mono-, or di-substitutedfluoren-9-ylidene or a saturated C₇-C₁₂ spiro-bicyclic hydrocarbonrings; each of said fluoren-9-ylidene substituents being fluoro,provided that for Formula (II) one or two of R₁₂, R₁₃, R₁₄, B, and B′ isin each case independently said L-Group as defined below; (3) for saidphotochromic material chosen from at least one naphthopyran representedby Formula (III), (a) R₂₁ is the group, —C(O)W or CH₂Q, describedhereinbefore in (1)(d), (b) R₂₂ and each R₂₃ are independently chosenfor each occurrence from hydroxy, NH₂ or N(R)H; wherein R is C₁-C₃ alkylor phenyl and n is chosen from the integers 0, 1 or 2, and (c) B and B′are each independently chosen from the groups described hereinbefore in(2)(d), provided that for Formula (III) one or two of R₂₁, R₂₂, R₂₃, B,and B′ is in each case independently said L-Group as defined below; (4)for said photochromic material chosen from at least one naphthopyranrepresented by Formula (IV), (a) R₅ is independently chosen from thegroups described hereinbefore in (1)(d), (b) R₂₄ and R₂₅ are each chosenfrom hydrogen or an amino group defined hereinafter, provided that R₂₄and R₂₅ are not both hydrogen; said amino group being, (i) —N(R₁₆)R₁₇,R₁₆ and R₁₇ each being independently chosen from C₁-C₈ alkyl, aryl, orC₃-C₂₀ cycloalkyl; and said aryl group being phenyl or naphthyl, (ii) anitrogen containing ring represented by the following formula:

 wherein each Y is independently chosen for each occurrence from —CH₂—,X is —Y—, —O—, —S—, or —N(R₂₆)—; R₂₆ being C₁-C₆ alkyl; said aryl groupbeing phenyl or naphthyl, m is chosen from the integer 1, 2 or 3, and pis chosen from the integer 0, 1, 2 or 3; provided that when p is 0, X isY, or (iii) said group represented by one of the following Formulas,

 wherein each R₂₈, R₂₉ and R₃₀ are chosen independently for eachoccurrence in each formula from hydrogen; R₂₇ is chosen independentlyfor each occurrence from C₁-C₆ alkyl, and q is chosen from the integer0, 1 or 2, (c) B and B′ are each independently chosen from the groupsdescribed hereinbefore in (2)(d), provided that for Formula (IV) one ortwo of R₅, R₂₄, and R₂₅, B, and B′ is in each case independently saidL-Group as defined below; (5) for said photochromic material chosen fromat least one phenanthropyan represented by one of Formula (VA) orFormula (VB), (a) R₃₁ is R₅ described hereinbefore in (1)(d), (b) R₃₂ ishydrogen or C₁-C₆ alkyl, (c) each R₃₃ is independently chosen for eachoccurrence from —N(R₁₀)R₁₁, which was described hereinbefore in (1)(d),C₁-C₆ alkyl, or —OR₃₄, wherein R₃₄ is C₁-C₆ alkyl, and q is the integer0, 1, or 2, and (d) B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d), provided that for Formula (VA)and Formula (VB) one or two of R₃₁, R₃₂, R₃₃, B, and B′ is in each caseindependently said L-Group as defined below; (6) for said photochromicmaterial chosen from at least one fluoranthenopyran represented byFormula (VI), (a) R₃₅ and R₃₆ are each independently chosen for eachoccurrence from C₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro, amino,mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino or mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, and q is the integer 0, 1 or 2, (b) R₅ ischosen from the group described hereinbefore in (1)(d), and (c) B and B′are each independently chosen from the groups described hereinbefore in(2)(d), provided that for Formula (VI) one or two of R₅, R₃₅, R₃₆, B,and B′ is in each case independently said L-Group as defined below; (7)for said photochromic material chosen from at least one naphthopyranrepresented by Formula (VII), (a) R₃₇ and R₃₈ together form an oxo groupor R₃₇ and R₃₈ each are independently chosen for each occurrence fromhydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, phenyl ormethacryloxy(C₁-C₆)alkyl, (b) R₃₉ is chosen from C₁-C₆ alkyl, C₁-C₆alkoxy, fluoro, or morpholino, and q is the integer 0, 1 or 2, (c) I isoxygen or —N(R₄₀)—, wherein R₄₀ is C₁-C₆ alkyl, C₃-C₇ cycloalkyl orphenyl, (d) K is oxygen, —N(R₄₀)— or —C(R₄₁)(R₄₂)—, wherein R₄₁ and R₄₂are each hydrogen or C₁-C₆ alkyl, and (e) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d),provided that for Formula (VII) one or two of R₃₇, R₃₈, R₃₉, B, and B′is in each case independently said L-Group as defined below; (8) forsaid photochromic material chosen from at least one naphthopyranrepresented by Formula (VIII), (a) R₄₃ and R₄₄ together form an oxogroup or R₄₃ and R₄₄ are both hydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl orphenyl, (b) R₄₅ is hydrogen or C₁-C₆ alkyl, (c) R₄₆ is hydrogen or C₁-C₆alkyl, C₃-C₇ cycloalkyl, (d) each R₄₇ is C₁-C₆ alkyl, C₁-C₆ alkoxy orfluoro, and q is the integer 0, 1 or 2, and (e) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d),provided that for Formula (VIII) one or two of R₄₃, R₄₄, R₄₅, R₄₆, R₄₇,B, and B′ is in each case independently said L-Group as defined below;(9) for said photochromic material chosen from at least one naphthopyranrepresented by Formulas (IXA), (IXB), (IXC), (IXD), (IXE), (IXF), (IXG)and (IXH), (a) R₄₃ and R₄₄ are the same groups described hereinbefore in(8)(a), (b) R₄₇ in each case is independently chosen from groupsdescribed hereinbefore in (8)(d), and q is in each case independently asdescribed hereinbefore in (8)(d), and (c) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d),provided that independently for each of Formulas (IXA), (IXB), (IXC),(IXD), (IXE), (IXF), (IXG) and (IXH), one or two of R₄₃, R₄₄, R₄₇, B,and B′ is in each case independently said L-Group as defined below; (10)for said photochromic material chosen from at least one naphthopyranrepresented by Formula (XA) and Formula (XB), (a) Ring A′ is chosenfrom, (i) an unsubstituted, mono- or di-substituted heterocyclic ring,or (ii) an unsubstituted, mono- or di-substituted indeno group, each ofsaid heterocyclic ring and indeno group substituents being C₁-C₄ alkyl,C₁-C₃ alkoxy, —N(R₀)R₁₁, which was described hereinbefore in (1)(d),benzo, mono- or di-substituted benzo fused to the indeno moiety, saidbenzo substituents being C₁-C₃ alkyl, C₁-C₃ alkoxy or —N(R₁₀)R₁₁, (b)R₄₈ is chosen from: (i) —C(O)W′, W′ being —OR₉ or —N(R₁₀)R₁₁, whichgroups are described hereinbefore in (1)(d), or (ii) —C(R₅₁)₂X′, whereinX′ is —CN, halogen, hydroxy, benzoyloxy, C₁-C₄ alkoxy, C₂-C₄ acyloxy,amino, C₁-C₄ mono-alkylamino, C₁-C₄ dialkylamino, morpholino,piperidino, 1-indolinyl or pyrrolidyl, and R₅₁ is hydrogen, C₁-C₄ alkyl,phenyl or naphthyl, (c) R₄₉ is hydrogen, C₁-C₄ alkyl, the mono- ordi-substituted aryl groups phenyl or naphthyl, said aryl substituentsbeing C₁-C₄ alkyl or C₁-C₄ alkoxy, chloro or fluoro, (d) each R₅₀ isfluoro, C₁-C₄ alkyl, C₁-C₄ alkoxy, phenyl, naphthyl, phenoxy, naphthoxy,or the group, —N(R₁₀)R₁₁, described hereinbefore in (1)(d), and q isselected from the integers 0, 1 or 2 for the naphthopyran represented byFormula (XA), or p is selected from the integers 0, 1, 2 or 3 for thenaphthopyran represented by Formula (XB), and (e) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d),provided that independently for each of Formula (XA) and Formula (XB)one or two of R₄₈, R₄₉, R₅₀, B, and B′ is in each case independentlysaid L-Group as defined below; (11) for said photochromic materialchosen from at least one indenonaphthopyran represented by Formula (XIA)and (XIB), (a) Ring A″ is an unsubstituted, mono-substituted ordi-substituted heterocyclic ring chosen from furo, thieno, benzothieno,benzofurano or indolo, the 2,3 or 3,2 positions of said heterocyclicring being fused to the I side of Formula (XIB), or to the p side ofsaid indenonaphthopyran represented by Formula (XIA), where saidheterocyclic ring substituents being C₁-C₆ alkyl, (b) R₅₂ and R₅₃together form an oxo group, a Spiro heterocyclic group having 2 oxygenatoms and from 3 to 6 carbon atoms including the spirocarbon atom, orR₅₂ and R₅₃ are each hydrogen, hydroxy, C₁-C₆ alkyl, C₃-C₇ cycloalkyl,phenyl or the group, —C(O)W″, wherein each W″ is C₁-C₆ alkoxy,mono(C₁-C₆)alkylamino or di(C₁-C₆)alkylamino, or R₅₂ and R₅₃ are eachthe group, —N(R₁₀)R₁₁, described hereinbefore in (1)(d), or —OR₅₄,wherein each R₅₄ is C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl, the group,—CH(R₅₅)X″, wherein each R₅₅ is hydrogen or C₁-C₃ alkyl, each X″ is—COOR₅₅, or each R₅₄ is the group, —C(O)Y′, wherein each Y′ is C₁-C₆alkyl, (c) R₄₇ in each case is independently chosen from groupsdescribed hereinbefore in (8)(d), and q is in each case independently asdescribed hereinbefore in (8)(d), and (d) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d),provided that independently for each of Formula (XIA) and Formula (XIB)one or two of R₄₇, R₅₂, R₅₃, B, and B′ is in each case independentlysaid L-Group as defined below; (12) for said photochromic chosen from atleast one indenonaphthopyran represented by Formula (XIIA) and Formula(XIIB), (a) Ring A″ is independently as described hereinbefore in(11)(a), wherein Ring A″ is fused to the i side of Formula (XIIB), or tothe p side of Formula (XIIA), (b) R₅₆ is hydrogen or hydroxy and R₅₇ isthe group, —CH(V′)₂, wherein V′ is —COOR₅₈, and each R₅₈ is C₁-C₆ alkylor phenyl(C₁-C₃)alkyl; or R₅₇ is the group, —CH(R₅₉)Y″, wherein R₅₉ ishydrogen and Y″ is —COOR₅₈, or —CH₂OR₆₀, wherein R₅₉ is C₁-C₆ alkyl ordi(C₁-C₆)alkylamino; and R₆₀ is C₁-C₆ alkyl, or (c) R₅₆ and R₅₇ togetherform the group, ═C(R₅₉)W″, wherein W″ is —COOR₅₈, (d) R₄₇ in each caseis independently chosen from groups described hereinbefore in (8)(d),and q is in each case independently as described hereinbefore in (8)(d),and (e) B and B′ are each independently chosen from the groups describedhereinbefore in (2)(d), provided that independently for each of Formula(XIIA) and Formula (XIIB) one or two of R₄₇, R₅₆, R₅₇, B, and B′ is ineach case independently said L-Group as defined below; (13) for saidphotochromic material chosen from at least one indenonaphthopyranrepresented by Formula (XIII), (a) R_(61′) is independently chosen foreach q from, (i) C₁-C₆ alkoxy, perfluoroalkyl, and halogen, (ii) —SR₆₇,R₆₇ being C₁-C₆ alkyl or aryl, and (iii) an amino group describedhereinbefore in (4)(b)(i), (ii) or (iii), where q is the integer 1, (b)R₆₁ is chosen from perfluoroalkyl or halogen, (c) R₆₂ and R₆₃ are eachindependently chosen from, (i) hydrogen, hydroxy, C₁-C₁₂ alkyl, C₃-C₁₂alkylidene, C₃-C₇ cycloalkyl, or —C(O)W″, wherein W″ being the samegroup described hereinbefore in (11)(b), (ii) an unsubstituted, mono-di- or tri-substituted group chosen from phenyl; each of said phenylsubstituents in (c)(ii) being chosen independently for each occurrencefrom chloro, fluoro, C₁-C₆ alkyl or C₁-C₆ alkoxy, (iii) amonosubstituted phenyl, described hereinbefore in (2)(d)(iv), (iv)—OR₆₇, R₆₇ being chosen from C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl, C₁-C₆alkoxy(C₂-C₄)alkyl tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy,tri(C₁-C₆)alkoxysilyl, tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆alkoxy)silyl, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl or di(C₁-C₆)alkoxy(C₁-C₆alkyl)silyloxy, (v) —CH(Q′″)₂, Q′″ being chosen from —COOR₆₉ and R₆₉being C₁-C₆ alkyl, (vi) —CH(R₇₀)G″, R₇₀ being chosen from hydrogen,C₁-C₆ alkyl or an unsubstituted, mono- or di-substituted aryl group,phenyl or naphthyl, and G″ being chosen from —COOR₆₉, —COR₇₁ or—CH₂OR₇₂, wherein R₇₁ being chosen from hydrogen, C₁-C₆ alkyl, anunsubstituted, mono- or di-substituted aryl group, phenyl or naphthyl,amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino, mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, diphenylamino, mono- or di(C₁-C₆)alkylsubstituted diphenylamino, mono- or di(C₁-C₆)alkoxy substituteddiphenylamino, morpholino or piperidino; R₇₂ being chosen from hydrogen,—C(O)R₆₉, C₁-C₆ alkyl, C₁-C₃ alkoxy(C₁-C₆)alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl or an unsubstituted,mono- or di-substituted aryl group, phenyl or naphthyl, each of saidaryl group substituents being independently chosen from C₁-C₆ alkyl orC₁-C₆ alkoxy, or (vii) R₆₂ and R₆₃ together form an oxo group or asubstituted or unsubstituted spiro-carbocyclic ring containing 3 to 6carbon atoms or a substituted or unsubstituted spiro-heterocyclic groupcontaining 1 or 2 oxygen atoms and 3 to 6 carbon atoms including thespirocarbon atom, said spiro-carbocyclic ring and spiro-heterocyclicgroup being annellated with 0, 1 or 2 benzene rings, said substituentsbeing hydrogen or C₁-C₆ alkyl, (d) R₆₄ is chosen from hydrogen, C₁-C₆alkyl or the group R_(a) chosen from, (i) —OR₇₃, R₇₃ being chosen fromphenyl(C₁-C₃)alkyl, C₁-C₆ alkyl, mono(C₁-C₆)alkyl substitutedphenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl,C₁-C₆ alkoxy(C₂-C₄)alkyl, C₃-C₇ cycloalkyl, mono(C₁-C₄)alkyl substitutedC₃-C₇ cycloalkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, allyl or—CH(R₆₈)Q″, or (ii) an amino group described hereinbefore in (4)(b)(i),(ii) or (iii), (e) R₆₅ is chosen from hydrogen, C₁-C₆ alkyl or R_(a),where R_(a) is the same as described hereinbefore in (d), (f) R₆₆ ischosen from hydrogen, C₁-C₆ alkyl or R_(a), where R_(a) is the same asdescribed hereinbefore in (d), or (g) R₆₅ and R₆₆ together form one ofthe following Formulas,

 wherein J′ and K′ are oxygen, and groups R₁₈ and R₁₉ are each the sameas described hereinbefore in (2)(d)(v), and (h) B and B′ are eachindependently chosen from the groups described hereinbefore in (2)(d),provided that for Formula (XIII) one or two of R₆₁, R_(61′), R₆₂, R₆₃,R₆₄, R₆₅, R₆₆, B, and B′ is in each case independently said L-Group asdefined below; (14) for the photochromic material chosen from at leastone indenonaphthopyran represented by Formula (XIV), (a) R₇₄ and R₇₅ areeach independently as described hereinbefore with regard to R₆₂ and R₆₃in (13)(c), (b) each R₇₆ is independently chosen fromdi(C₁-C₆)alkylamino, dicyclohexylamino, diphenylamino, piperidyl,morpholinyl, pyridyl, halogen, or group —C(O)W″, the group —C(O)W″ beingthe same group described hereinbefore in (11)(b); and q is the integer0, 1, or 2; or when q is 2, and the R₇₆ substituents are adjacent, eachpair of substituents independently forms a substituted or unsubstitutedfused carbocyclic or heterocyclic ring chosen from benzo, dihydrofurano,1,4-dioxolo, 1,3-dioxino, or benzofuro, the substituents of said fusedcarbocyclic or heterocyclic ring being chosen from the group consistingof C₁-C₆ alkyl or C₁-C₆ alkoxy, and (c) B and B′ are each independentlychosen from the groups described hereinbefore in (2)(d), provided thatfor Formula (XIV) one or two of R₇₄, R₇₅, R₇₆, B, and B′ is in each caseindependently said L-Group as defined below; wherein independently foreach L-Group represented by Formula (XV), (i) Q₁, Q₂, and Q₃ are eachindependently for each occurrence a divalent group selected fromoptionally substituted aryl, optionally substituted heteroaryl,optionally substituted cycloalkyl, and optionally substitutedheterocycloalkyl, wherein each substituent is independently selectedfrom, P, liquid crystal mesogens, halogen, poly(C₁-C₁₂ alkoxy), C₁-C₁₂alkoxycarbonyl, C₁-C₁₂ alkylcarbonyl, perfluoro(C₁-C₁₂)alkoxy,perfluoro(C₁-C₁₂)alkoxycarbonyl, perfluoro(C₁-C₁₂)alkylcarbonyl, C₁-C₁₈acetyl, C₃-C₇ cycloalkyl, C₃-C₇ cycloalkoxy, straight-chain C₁-C₁₂alkyl, and branched C₁-C₁₂ alkyl, wherein said straight-chain C₁-C₁₂alkyl and branched C₁-C₁₂ alkyl are mono-substituted with a groupselected from, halogen, and C₁-C₁₂ alkoxy, or wherein saidstraight-chain C₁-C₁₂ alkyl and branched C₁-C₁₂ alkyl arepoly-substituted with at least two groups independently selected fromhalogen; (ii) c, d, e, and f are each independently an integer chosenfrom 1 to 10; and S₁, S₂, S₃, S₄, and S₅ are each independently for eachoccurrence a spacer unit selected from: (1) substituted or unsubstitutedalkylene, substituted or unsubstituted haloalkylene, —Si(CH₂)_(g)—, and—(Si[(CH₃)₂]O)_(h)—, wherein g for each occurrence is independentlychosen from an integer from 1 to 10; h for each occurrence isindependently chosen from an integer from 1 to 8; and said substitutesfor the alkylene and haloalkylene are independently selected from C₁-C₁₂alkyl, C₃-C₇ cycloalkyl and phenyl; (2) —N(Z)—, —C(Z)═C(Z)—, and asingle bond, wherein Z for each occurrence is independently selectedfrom hydrogen, C₁-C₁₂ alkyl, C₃-C₇ cycloalkyl and phenyl; and (3) —O—,—C(═O)—, —N═N—, —S—, and —S(═O)—, provided that when two spacer unitscomprising heteroatoms are linked together the spacer units are linkedso that heteroatoms of the first spacer unit are not directly linked tothe heteroatoms of the second spacer unit, and provided that when Si islinked to Formula I and S₅ is linked to P, Si and S5 are each linked sothat two heteroatoms are not directly linked to each other; (iii) P foreach occurrence is selected from hydroxy, amino, C₂-C₁₂ alkenyl, C₂-C₁₂alkenyl, silyl, siloxy, (tetrahydro-2H-pyran-2-yl)oxy, isocyanato,acryloyloxy, methacryloyloxy, epoxy, carboxylic acid, carboxylic ester,C₁-C₁₂ alkyloxycarbonyloxy, halocarbonyl, hydrogen, aryl,hydroxy(C₁-C₁₂)alkyl, C₁-C₁₂ alkyl, C₁-C₁₂ alkoxy, ethylene, acryloyl,acryloyloxy(C₁-C₁₂)alkyl, methacryloyl, methacryloyloxy(C₁-C₁₂)alkyl,oxetanyl, glycidyl, vinyl ether, siloxane derivartives, unsubstitutedcinnamic acid derivatives, cinnamic acid derivatives that aresubstituted with at least one of methyl, methoxy, cyano and halogen, andsubstituted or unsubstituted chiral or non-chiral monovalent or divalentgroups chosen from steroid radicals, wherein each substituent isindependently chosen from C₁-C₁₂ alkyl, C₁-C₁₂ alkoxy, amino, C₃-C₇cycloalkyl, C₁-C₁₂ alkyl(C₁-C₁₂)alkoxy, or fluoro(C₁-C₁₂)alkyl, or P isa structure having from 2 to 4 reactive groups; and (iv) d′, e′ and f′are each independently chosen from 0, 1, 2, 3, and 4, provided that asum of d′+e′+f′ is at least
 2. 5. The photochromic article of claim 4wherein, independently for each L-Group represented by Formula (XV), (i)Q₁, Q₂, and Q₃ are each independently for each occurrence a divalentgroup selected from optionally substituted aryl, optionally substitutedheteroaryl, optionally substituted cycloalkyl, and optionallysubstituted heterocycloalkyl, wherein each substituent is independentlyselected from, P, C₁-C₆ alkoxycarbonyl, perfluoro(C₁-C₆)alkoxy, C₃-C₇cycloalkyl, C₃-C₇ cycloalkoxy, straight-chain C₁-C₆ alkyl, and branchedC₁-C₆ alkyl, wherein said straight-chain C₁-C₆ alkyl and branched C₁-C₆alkyl are mono-substituted with a group selected from halogen and C₁-C₁₂alkoxy, or wherein said straight-chain C₁-C₆ alkyl and branched C₁-C₆alkyl are poly-substituted with at least two groups independentlyselected from halogen; (ii) c, d, e, and f are each independently aninteger chosen from 1 to 10; and S₁, S₂, S₃, S₄, and S₅ are eachindependently for each occurrence a spacer unit selected from: (1)substituted or unsubstituted alkylene; (2) —N(Z)—, —C(Z)═C(Z)—, and asingle bond, wherein Z for each occurrence is independently selectedfrom hydrogen and C₁-C₆ alkyl; and (3) —O—, —C(═O)—, —C≡C—, and —N═N—,—S—; provided that when two spacer units comprising heteroatoms arelinked together the spacer units are linked so that heteroatoms of thefirst spacer unit are not directly linked to the heteroatoms of thesecond spacer unit, and provided that when Si is linked to Formula I andS₅ is linked to P, S₁ and S₅ are each linked so that two heteroatoms arenot directly linked to each other; (iii) P for each occurrence isindependently selected from hydroxy, amino, C₂-C₆ alkenyl, C₂-C₆alkenyl, siloxy, (tetrahydro-2H-pyran-2-yl)oxy, isocyanato, acryloyloxy,methacryloyloxy, epoxy, carboxylic acid, carboxylic ester, C₁-C₆alkyloxycarbonyloxy, hydrogen, aryl, hydroxy(C₁-C₆)alkyl, C₁-C₆ alkyl,ethylene, acryloyl, acryloyloxy(C₁-C₁₂)alkyl, oxetanyl, glycidyl, vinylether, siloxane derivartives, and substituted or unsubstituted chiral ornon-chiral monovalent or divalent groups chosen from steroid radicals,wherein each substituent is independently chosen from C₁-C₆ alkyl, C₁-C₆alkoxy, amino, C₃-C₇ cycloalkyl.
 6. The photochromic article of claim 1wherein each L-Group is independently selected from,

L-D C-(a) (4-trans-(4-pentylcyclohexyl)benzamido)phenyl, L-DC-(b)(4-(4-trans-(4-pentylcyclohexyl)phenoxy)carbonyl)phenyl, L-DC-(c)4-(4-(4-trans-(4-pentylcyclohexyl)phenyl)benzamido)phenyl, L-DC-(d)4-((trans-(4′-pentyl-[1,1′-bi(cyclohexan)]-4-yl)oxy)carbonyl)phenyl,L-DC-(e)4-(4′-(4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarboxamido)phenyl,L-DC-(f)4-((4′-(4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)oxy)benzamido,L-DC-(g)4-(4′-(4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)piperazin-1-yl,L-DC-(h)4-(4-(4-trans-(4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl,L-DC-(i)2-methyl-4-trans-(4-((4′-trans-(4-pentylcyclohexyl)biphenyl-4-yloxy)carbonyl)cyclohexanecarboxamido)phenyl,L-DC-(j) 4′-(4′-pentylbi(cyclohexane-4-)carbonyloxy)biphenylcarbonyloxy,L-DC-(k)4-(((3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yloxy)carbonyl)piperazin-1-yl,and L-DC-(l)4-((S)-2-methylbutoxy)phenyl)-10-(4-(((3R,3aS,6S,6aS)-6-(4′-trans-(4-pentylcyclohexyl)biphenylcarbonyloxy)hexahydrofuro[3,2-b]furan-3-yloxy)carbonyl)phenyl.7. The photochromic article of claim 4, wherein photochromic material(b) is selected from at least one of: (1) at least onefluoranthenoxazine represented by Formula (I) being chosen from at leastone of,1-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-1′,3′,3′-trimethyl-spiro[indoline-2′,5-[3H]-fluorantheno[3,2-b][1,4]oxazine],and1-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-1′-propyl-3′,3′,4′,5′(or3′,3′,5′,6′)-tetramethyl-spiro[indoline-2′,5-[3H]-fluorantheno[3,2-b][1,4]oxazine];(2) at least one naphthopyran represented by Formula (II) being chosenfrom at least one of,7-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-3-(2-fluorophenyl)-3-(4-methoxyphenyl)-8-hydroxy-9-carbopropoxy-3H-naphtho[2,1-b]pyran,6,7-bis(4-(4′-(trans-4-pentylcyclohexyl)biphenyl-4-ylcarboxamido)phenyl)-3-(2-fluorophenyl)-3-(3-methoxy-2-thienyl)-7-h-pentyl-8-benzoyloxy-3H-naphtho[2,1-b]pyran,and7-(4′-(trans,trans-4′-pentylbi(cyclohexane-4-)carbonyloxy)biphenylcarbonyloxy)-3-(2,4-dimethoxyphenyl)-3-(4-methoxyphenyl)-8-acetoxy-9-carbomethoxy-3H-naphtho[2,1-b]pyran;(3) at least one naphthopyran represented by Formula (III) being chosenfrom at least one of,8-(4′-(trans,trans-4′-pentylbi(cyclohexane-4-)carbonyloxy)biphenylcarbonyloxy)-2,2-di(4-methoxyphenyl)-5-methoxycarbonyl-6-hydroxy-2H-naphtho[1,2-b]pyran,and8-(4-(4-(trans-4-pentylcyclohexyl)benzamido)phenyl)-2,2-diphenyl-5-methoxycarbonyl-6-phenylamino-2H-naphtho[1,2-b]pyran,(4) at least one naphthopyran represented by Formula (IV) being chosenfrom at least one of, 8-(4′-(trans,trans-4′-pentylbi(cyclohexane-4-)carbonyloxy)biphenylcarbonyloxy)-2-phenyl-2-(4-morpholinophenyl)-5-carbomethoxy-9-dimethylamino-2H-naphtho[1,2-b]pyran,and8-(4-(4-(trans-4-pentylcyclohexyl)benzamido)phenyl)-2-phenyl-2-(4-methoxyphenyl)-5-carbomethoxy-9-dimethylamino-2H-naphtho[1,2-b]pyran;(5) at least one phenanthropyan represented by at least one of Formula(VA) and Formula (VB) being chosen from at least one of,8-(4′-(trans,trans-4′-pentylbi(cyclohexane-4-) carbonyloxy)biphenylcarbonyloxy)-3,3-diphenyl-12-methoxycarbonyl-11-methyl-3H-phenanthro[1,2-b]pyran,8-(2-methyl-4-(trans-4-((4′-((trans-4-pentylcyclohexyl)biphenyl-4-yloxy)carbonyl)cyclohexanecarboxamido)phenyl)-2,2-diphenyl-5-methoxcarbonyl-6-methyl-2H-phenanthro[4,3-b]pyran,8-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)piperazin-1-yl)-2-(4-methoxyphenyl)-2-phenyl-5-methoxycarbonyl-6-methyl-2H-phenanthro[4,3-b]pyran,and8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]3-(2-fluorophenyl)-3-(4-methoxyphenyl)-6-methoxy-12-methoxycarbonyl-3H-phenanthro[1,2-b]pyran;(6) at least one fluoranthenopyran represented by Formula (VI) beingchosen from at least one of,1-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-5-(4-methoxyphenyl)-5-(4-morpholinophenyl)-8-ethoxycarbonyl-5H-fluorantheno[3,2-b]pyran,and8-(2-methyl-4-(trans-4-((4′-((trans-4-pentylcyclohexyl)biphenyl-4-yloxy)carbonyl)cyclohexanecarboxamido)phenyl)-5,5-bis(4-methoxyphenyl)-2-methoxy-8-methoxycarbonyl-5H-fluorantheno[3,2-b]pyran;(7) at least one naphthopyran represented by Formula (VII) being chosenfrom at least one of,11-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)phenyl]-7,7-diphenyl-2-(1-phenylethyl)-4-oxo-4H-7H-[1,3]dioxino[5′,4′:3,4]naphtho[1,2-b]pyran,and11-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)piperazin-1-yl)-3-(2-methacryloyloxyethyl)-7,7-diphenyl-2,4-dioxo-2,3,4,7-tetrahydro[1,3]oxazino[5′,6′:3,4]naphtho[1,2-b]pyran;(8) at least one naphthopyran represented by Formula (VIII) being chosenfrom at least one of,10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-2-(4-methoxyphenyl)-2-(2,4-dimethoxy-phenyl)-7-diphenylmethyl-5-oxo-2H-5H-pyrano[3′,4′:3,4]naphtho[1,2-b]pyran,and10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-2-(4-methoxyphenyl)-2-(4-morphiliono-phenyl)-7-diphenylmethyl-5-oxo-2H-5H-pyrano[3′,4′:3,4]naphtho[1,2-b]pyran;(9) at least one naphthopyran represented by at least one of Formulas(IXA), (IXB), (IXC), (IXD), (IXE), (IXF), (IXG) and (IXH) being chosenfrom at least one of,2-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-6,6-bis(4-methoxyphenyl)-6,10-dihydro[2]benzopyrano-[3′,4′:3,4]naphtho(1,2-b)pyran,8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-2-(4-methoxyphenyl)-2-(4-morpholinophenyl)-10-oxo-2,10-dihydro[2]benzopyrano[4′,3′:3,4]naphtho(2,1-b)pyran,8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(4-methoxyphenyl)-2-phenyl-12,13-dimethoxy-10-oxo-2,10-dihydro[2]benzopyrano[4′,3′:3,4]naphtho(2,1-b)pyran,2-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-6,6-diphenyl-9-oxo-6,9-dihydro[1]benzopyrano[3′,4′:3,4]naphtho(1,2-b)pyran, and6-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-3,3-diphenyl-8-oxo-3,8-dihydro[2]benzopyrano[3′,4′:5,6]naphtho (2,1-b)pyran; (10) at least one naphthopyran represented byat least one of Formula (XA) and Formula (XB) being chosen from at leastone of,8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2,2-bis(4-methoxyphenyl)-5-methoxycarbonyl-6-methyl-2H-benzofuro[2′,3′:8,9]naphtho[12-b]pyran,and3,3-Bis(4-methoxyphenyl)-13-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-10-methoxy-3H-naphtho[2″,1″:4′,5′]furo[2′,3′:3,4]naphtho[1,2-b]pyran;(11) at least one indenonaphthopyran represented by at least one ofFormula (XIA) and Formula (XIB) being chosen from at least one of,10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-3,3-di(4-methoxyphenyl)-16-hydroxy-16-ethyl-16H-benzofuro[2′,3′:7,8]indeno[2′,3′:3,4]naphtho[1,2-b]pyran,8-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-3,3-di(4-methoxyphenyl)-16-hydroxy-16H-benzofuro[2″,3″:6′,7′]indeno[3′,2′:4,3]naphtho[1,2-b]pyran,and3,3-di(4-methoxyphenyl)-10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-16-hydroxy-16-ethyl-16H-benzofuro[2″,3″:6′,7′]indeno[3′,2′:4,3]naphtho[1,2-b]pyran;(12) at least one indenonaphthopyran represented by at least one ofFormula (XIIA) and Formula (XIIB) being chosen from at least one of,3,3-di(4-methoxyphenyl)-10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-2-(trifluoromethyl)phenyl]-16-(ethoxycarbonyl)methyl-16-hydroxy-3,16-di[H]-benzofuro[2′,3′:7,8]indeno[2′,3′:3,4]naphtho[1,2-b]pyran,and10-[4-(4-(4-(trans-4-pentylcyclohexyl)phenyl)benzamido)-3-(4-methoxyphenyl)-3-(4-morpholinophenyl)-16-(ethoxycarbonyl)methyl-16-hydroxy-3,16-di[H]-benzofuro[2′,3′:7,8]indeno[2′,3′:3,4]naphtho[1,2-b]pyran;(13) at least one indenonaphthopyran represented by Formula (XIII) beingchosen from at least one of,3-(4-fluorophenyl)-3-(4-morpholinophenyl)-6,8-difluoro-10-(4-(4′-trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran,3-(4-butoxyphenyl)-3-(4-fluorophenyl)-5,7-dichloro-10-(4-(4′-trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran,3-(4-butoxyphenyl)-3-(4-fluorophenyl)-6,8-difluoro-10-(4-(4′-trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran,3-(4-butoxyphenyl)-3-(4-fluorophenyl)-6-(trifluoromethyl)-10-[4-(4′-(4(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyloxy)benzamido]-12-bromo-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran,3-(4-butoxyphenyl)-3-(4-methoxyphenyl)-5,7-dichloro-10-(4-(4′-trans-4-pentylcyclohexyl)-11-methoxy-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran,5,7-Dichloro-12-bromo-3,3-bis(4-hydroxyphenyl)-11-methoxy-13,13-dimethyl-10-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarboxamido)phenyl)-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran,3-(4-butoxyphenyl)-3-(4-fluorophenyl)-6-(trifluoromethyl)-10-[4-(4′-(4-(trans-4-pentylcyclohexyl)-[1,1-biphenyl]-4-carbonyloxy)benzamido]-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran,3-(4-butoxyphenyl)-3-(4-fluorophenyl)-7-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarbamido)phenyl)-11-(trifluoromethyl)-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran,and3-(4-butoxyphenyl)-3-(4-fluorophenyl)-6-(trifluoromethyl)-10-[(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-yl)carbonyl)piperazin-1-yl]-13,13-dimethyl-3,13-dihydro-indeno[2′,3′:3,4]naphtho[1,2-b]pyran;and (14) at least one indenonaphthopyran represented by Formula (XIV)being chosen from at least one of,7-(4-((4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-carbonyl)oxy)benzamido)-3,3,9-triphenyl-3H-9H-benzo[4″,5″]indeno[3′,2′:3,4]naphtho[1,2-b]pyran,7-(4-(4′-(trans-4-pentylcyclohexyl)-[1,1′-biphenyl]-4-ylcarboxamido)phenyl)-3-(4-morpholinophenyl)-3,9-diphenyl-3H-9H-benzo[4″,5″]indeno[3′,2′:3,4]naphtho[1,2-b]pyran,10-(4-(4′-(trans-4-pentylcyclohexyl)[1,1′-biphenyl]-4-carbonyl)piperazin-1-yl)-3,3-di(4-methoxyphenyl)-9,9-dimethyl-7,11-dimethoxy-3H-9H-benzo[4″,5″]indeno[3′,2′:3,4]naphtho[1,2-b]pyran,and7-(2-methyl-4-(trans-4-((4′-((trans-4-pentylcyclohexyl)biphenyl-4-yloxy)carbonyl)cyclohexanecarboxamido)phenyl)-3,3-di(4-methoxyphenyl)-9-methyl-11,13-dimethoxy-3H-9H-benzo[4″,5″]indeno[3′,2′:3,4]naphtho[1,2-b]pyran.8. The photochromic article of claim 1 further comprising at least onefixed tint dye.
 9. The photochromic article of claim 1 wherein saidphotochromic article is adapted to exhibit a neutral activated color.10. The photochromic article of claim 1 further comprising at least oneother photochromic material (c) that is different from photochromicmaterial (b).
 11. The photochromic article of claim 10 whereinphotochromic material (c) is an organic photochromic material, inorganicphotochromic material or a mixture thereof.
 12. The photochromic articleof claim 11 wherein photochromic material (c) is an organic photochromicmaterial and is chosen from naphthopyrans, benzopyrans,phenanthropyrans, indenonaphthopyrans, oxazines, metal-dithiozonates,fulgides, fulgimides, spiro(indoline)pyrans or mixtures thereof.
 13. Thephotochromic article of claim 11 wherein photochromic material (c) is aninorganic photochromic material and is chosen from silver halide,cadmium halide, copper halide europium (II), cerium (III) or mixturesthereof.
 14. The photochromic article of claim 1 wherein the substratecomprises at least one photochromic material (b).
 15. The photochromicarticle of claim 14 wherein the substrate further comprises at least onephotochromic material (c) that is different from photochromic material(b).
 16. The photochromic article of claim 1 further comprising acoating, comprising an at least partially cured polymer matrix, appliedto at least one surface of the substrate.
 17. The photochromic articleof claim 16 wherein the at least partially cured polymeric coatingcomprises photochromic material (b).
 18. The photochromic article ofclaim 17 wherein the coating further comprises at least one otherphotochromic material (c) that is different from photochromic material(b).
 19. The photochromic article of claim 1 wherein the substrate ischosen from paper, glass, ceramic, wood, masonry, textile, metal ororganic polymeric material.
 20. The photochromic article of claim 19wherein the substrate is organic polymeric material and said organicpolymeric material is chosen from poly(C₁-C₁₂ alkyl methacrylates),poly(oxyalkylene dimethacrylates), poly(alkoxylated phenolmethacrylates), cellulose acetate, cellulose triacetate, celluloseacetate propionate, cellulose acetate butyrate, poly(vinyl acetate),poly(vinyl alcohol), poly(vinyl chloride), poly(vinylidene chloride),thermoplastic polycarbonates, polyesters, polyurethanes, poly(ethyleneterephthalate), polystyrene, poly(alpha methylstyrene),copoly(styrene-methylmethacrylate), copoly(styrene-acrylonitrile),polyvinylbutyral or is polymerized from monomers chosen from bis(allylcarbonate)monomers, polyfunctional acrylate monomers, polyfunctionalmethacrylate monomers, diethylene glycol dimethacrylate monomers,diisopropenyl benzene monomers, ethoxylated bisphenol A dimethacrylatemonomers, ethylene glycol bismethacrylate monomers, poly(ethyleneglycol)bismethacrylate monomers, ethoxylated phenol his methacrylatemonomers, alkoxylated polyhydric alcohol polyacrylate monomers, styrenemonomers, urethane acrylate monomers, glycidyl acrylate monomers,glycidyl methacrylate monomers, diallylidene pentaerythritol monomers ormixtures thereof.
 21. The photochromic article of claim 20 wherein thesubstrate is an optical element.
 22. The photochromic article of claim21 wherein said optical element is an ophthalmic lens.
 23. Thephotochromic article of claim 1 wherein said photochromic article issubstantially free of ultraviolet radiation absorbing materials adaptedto substantially inhibit the activation of said photochromic material byradiation below 380 nanometers.
 24. The photochromic article of claim 1wherein said photochromic article is adapted to exhibit an unactivatedstate luminous transmittance of greater than 70 percent at 23° C., anactivated state luminous transmittance at saturation less than 30percent when activated at 23° C. by simulated sunlight from a xenon arclamp set at 6.7 Watts/meter² UVA and 50,000 lumens/meter², and anactivated state luminous transmittance at saturation less than 60percent when activated at 28° C. by simulated sunlight from a xenon arclamp through an UV blocking transparency rendering an irradianceintegrated between 380 and 420 nanometers of 0.75 Watts/meter² and 1,700lumens/meter².
 25. The photochromic article of claim 24 wherein thephotochromic article is adapted to exhibit an unactivated state luminoustransmittance of greater than 80 percent at 23° C., an activated stateluminous transmittance at saturation less than 30 percent when activatedat 23° C. by simulated sunlight from a xenon arc lamp set at 6.7Watts/meter² UVA and 50,000 lumens/meter², and an activated stateluminous transmittance at saturation less than 40 percent when activatedat 28° C. by simulated sunlight from a xenon arc lamp through an UVblocking transparency rendering an irradiance integrated between 380 and420 nanometers of 0.75 Watts/meter² and 1,700 lumens/meter².
 26. Thephotochromic article of claim 24 wherein the UV blocking transparency isa vehicular windshield.
 27. A method for producing a photochromicarticle adapted to retain at least 12 percent of the delta OD measuredin the Outdoor Test when tested in the Behind the Windshield Testcomprising: a) providing a substrate; b) providing at least onephotochromic material (b) of claim 1; c) combining said photochromicmaterial together with said substrate by a method chosen from: i)introducing photochromic material (b) with the starting materials usedto form said substrate; ii) at least partially imbibing photochromicmaterial (b) into at least one surface of said substrate; iii) applyingat least a partial coating of a polymeric coating composition comprisingphotochromic material (b) to at least one surface of said substrate; iv)at least partially connecting a superstrate comprising photochromicmaterial (b) to at least one surface of said substrate; or v)combinations of i), ii), ii) or iv).
 28. The method of claim 27 furthercomprising adding a photochromic material (c) that is different fromphotochromic material (b), in (c) (i), (ii), (iii), (iv) or (v).
 29. Themethod of claim 28 further comprising adding a fixed tint dye in (c)(i), (ii), (iii), (iv) or (v).
 30. A photochromic article comprising:(a) a substrate; and (b) at least one photochromic material adapted tochange from an unactivated form to an activated form by exposure toradiation substantially in the wavelength range from 380 to 450nanometers when measured over a range of from 380 to 700 nanometers,said photochromic article being adapted to retain at least 12 percent ofthe delta OD measured in the Outdoor Test when tested in the Behind theWindshield Test, wherein photochromic material (b) is chosen from atleast one of, (1) a photochromic material chosen from at least onefluoranthenoxazine represented by the following Formula (I),

wherein for Formula (I), (a) R₁ is chosen from hydrogen, C₁-C₈ alkyl,C₃-C₇ cycloalkyl, phen(C₁-C₄)alkyl, naphth(C₁-C₄)alkyl, allyl,acrylyloxy(C₂-C₆)alkyl, methacrylyloxy(C₂-C₆)alkyl, C₂-C₄acyloxy(C₂-C₆)alkyl, carboxy(C₂-C₆)alkyl, cyano(C₂-C₆)alkyl,hydroxy(C₂-C₆)alkyl, triarylsilyl, triarylsilyloxy,tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, C₁-C₆ alkoxy(C₂-C₄)alkyl or(C₂H₄O)_(r)—CH₃, wherein r is an integer from 1 to 6, (b) R₂ is chosenfrom C₁-C₅ alkyl, C₁-C₅ alkoxy, nitro, cyano, C₁-C₈ alkoxycarbonyl,C₁-C₄ acyloxy, halo, C₁-C₄ monohaloalkyl or C₁-C₄ polyhaloalkyl; saidhalo substituents being chloro, fluoro, iodo or bromo and q is 0, 1 or2, (c) R₃ and R₄ are each independently chosen from C₁-C₅ alkyl, benzyl,phenyl, mono- or di-substituted phenyl, said phenyl substituents beingC₁-C₅ alkyl or C₁-C₅ alkoxy; or R₃ and R₄ taken together form a groupchosen from a cyclic ring of from 5 to 8 carbon atoms which includes theSpiro carbon atom, (d) R₅ is chosen from hydrogen, —CH₂Q and —C(O)W,wherein Q is halogen, hydroxy, benzoyloxy, C₁-C₆ alkoxy, C₂-C₆ acyloxy,amino, C₁-C₆ mono-alkylamino, C₁-C₆ dialkylamino, morpholino,piperidino, 1-indolinyl, pyrrolidyl, triarylsilyl, triarylsilyloxy,tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy, tri(C₁-C₆)alkoxysilyl,tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyl,di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy, or the group, —OCH(R₈)Z; W is thegroup, —OCH(R₈)Z, or an unsubstituted, mono-substituted, ordi-substituted heterocyclic ring containing 5 to 6 ring atoms, whichring includes as the hetero atom a nitrogen atom alone or one additionalhetero atom of nitrogen or oxygen; wherein Z is —CN, —CF₃, halogen,—C(O)R₈, or —COOR₅, R₈ is hydrogen or C₁-C₆ alkyl; said heterocyclicring substituents being chosen from C₁-C₆ alkyl or C₁-C₆ alkoxy; or W is—OR₉ or —N(R₁₀)R₁₁, wherein R₉ is chosen from hydrogen, allyl, C₁-C₆alkyl, phenyl, mono(C₁-C₆)alkyl substituted phenyl,mono(C₁-C₆)alkoxy-substituted phenyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxysubstituted phenyl(C₁-C₃)alkyl, C₁-C₆ alkoxy(C₂-C₄)alkyl, or C₁-C₆haloalkyl; and R₁₀ and R₁₁ are each independently chosen from hydrogen,C₁-C₆ alkyl, C₅-C₇ cycloalkyl, phenyl, mono- or di-substituted phenyl,or R₁₀ and R₁₁ together with the nitrogen atom form a mono- ordi-substituted or unsubstituted heterocyclic ring containing from 5 to 6ring atoms, which ring includes as the hetero atom said nitrogen atomalone or one additional hetero atom of nitrogen or oxygen, said phenyland heterocyclic ring substituents being C₁-C₆ alkyl or C₁-C₆ alkoxy,and each of said halogen or halo groups in this part (d) being fluoro orchloro, and (e) each R₆ and R₇ is independently chosen for eachoccurrence from aryl, mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkoxyaryl,mono(C₁-C₆)alkylaryl, di(C₁-C₆)alkylaryl, bromoaryl, chloroaryl,fluoroaryl, C₃-C₇ cycloalkylaryl, C₃-C₇ cycloalkyl, C₃-C₇ cycloalkyloxy,C₃-C₇ cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇ cycloalkyloxy(C₁-C₆)alkoxy,aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy, aryloxy, aryloxy(C₁-C₆)alkyl,aryloxy(C₁-C₆)alkoxy, mono- or di(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, diarylamino, N—(C₁-C₆)alkylpiperazino,N-arylpiperazino, aziridino, indolino, piperidino, arylpiperidino,morpholino, thiomorpholino, tetrahydroquinolino, tetrahydroisoquinolino,pyrryl, C₁-C₆ alkyl, C₁-C₆ bromoalkyl, C₁-C₆ chloroalkyl, C₁-C₆fluoroalkyl, C₁-C₆ alkoxy, mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy,methacryloxy, bromo, chloro or fluoro; and q is independently chosen foreach occurrence final the integer 0, 1, or 2, provided that for Formula(I) at least one of and less than all of R₁, R₂, R₃, R₄, R₅, R₆, and R₇is in each case independently an L-Group as defined below; (2) aphotochromic material chosen from at least one naphthopyran representedby the following Formula (II),

wherein for Formula (II), (a) R₁₂ is hydrogen or a C₁-C₆ alkyl, (b) R₁₃is hydrogen or the group, —C(O)J, J being —OR₁₅ or —N(R₁₀)R₁₁, whereinR₁₅ is hydrogen, allyl, C₁-C₆ alkyl, phenyl, C₁-C₆ monoalkyl substitutedphenyl, C₁-C₆ monoalkoxy substituted phenyl, phenyl(C₁-C₃)alkyl, C₁-C₆monoalkyl substituted phenyl(C₁-C₃)alkyl, C₁-C₆ monoalkoxy substitutedphenyl(C₁-C₃)alkyl, C₁-C₆ alkoxy(C₂-C₄)alkyl, or C₁-C₆ monohaloalkyl,and wherein R₁₀ and R₁₁ are the same as described hereinbefore in(1)(d), and said halo substituent being chloro or fluoro, (c) R₁₄ is—OR₉, —N(R₁₀)R₁₁, wherein R₉, R₁₀ and R₁₁ are the same as describedhereinbefore in (1)(d), or the group, —C(O)V; wherein V is C₁-C₆ alkyl,phenyl, C₁-C₆ mono- or C₁-C₆ di-alkyl substituted phenyl, C₁-C₆ mono- orC₁-C₆ di-alkoxy substituted phenyl, C₁-C₆ alkoxy, phenoxy, C₁-C₆ mono-or C₁-C₆ di-alkyl substituted phenoxy, C₁-C₆ mono- or C₁-C₆ di-alkoxysubstituted phenoxy, C₁-C₆ alkylamino, phenylamino, C₁-C₆ mono- or C₁-C₆di-alkyl substituted phenylamino, or C₁-C₆ mono- or C₁-C₆ di-alkoxysubstituted phenylamino, and said halo substituent being chloro, fluoroor bromo, provided that either R₁₂ or R₁₃ is hydrogen; and (d) B and B′are each independently chosen from, (i) mono-T-substituted phenyl,wherein the group T is represented by the formula,-G[(OC₂H₄)_(x)(OC₃H₆)_(y)(OC₄H₈)_(z)]G′-—[(OC₂H₄)_(x)(OC₃H₆)_(y)(OC₄H₈)_(z)]G′ wherein -G being chosen from—C(O)— or —CH₂—, G′ being chosen from C₁-C₃ alkoxy or a polymerizablegroup, x, y and z each being independently chosen from a number between0 and 50, and the sum of x, y and z being between 2 and 50, (ii) anunsubstituted, mono-, di-, or tri-substituted aryl group, phenyl ornaphthyl, (iii) 9-julolidinyl or the unsubstituted, mono- ordi-substituted heteroaromatic group chosen from pyridyl furanyl,benzofuran-2-yl, benzofuran-3-yl, thienyl, benzothien-2-yl,benzothien-3-yl, dibenzofuranyl, dibenzothienyl, carbazoyl,benzopyridyl, indolinyl or fluorenyl, each of said aryl andheteroaromatic substituents in (ii) and (iii) being independently chosenfrom hydroxy, —C(O)U, wherein U being hydroxy, C₁-C₆ alkyl, C₁-C₆alkoxy, phenyl, mono-substituted phenyl, amino, mono(C₁-C₆)alkylamino,di-(C₁-C₆)alkylamino, morpholino, piperidino or pyrrolidyl; aryl,mono(C₁-C₆)alkoxyaryl, di(C₁-C₆)alkoxyaryl, mono(C₁-C₆)alkylaryl,di(C₁-C₆)alkylaryl, chloroaryl, fluoroaryl, C₃-C₇ cycloalkylaryl, C₃-C₇cycloalkyl, C₃-C₇ cycloalkyloxy, C₃-C₇ cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇cycloalkyloxy(C₁-C₆)alkoxy, aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy,aryloxy, aryloxy(C₁-C₆)alkyl, aryloxy(C₁-C₆)alkoxy, mono- ordi-(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- ordi-(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi-(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi-(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, diarylamino, piperazino, N—(C₁-C₆)alkylpiperazino,N-arylpiperazino, aziridino, indolino, piperidino, morpholino,thiomorpholino, tetrahydroquinolino, tetrahydroisoquinolino, pyrrolidyl,C₁-C₆ alkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, C₁-C₆ alkoxy,mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy, methacryloxy, bromo, chloro orfluoro, said aryl being chosen from phenyl or naphthyl, (iv) anunsubstituted or mono-substituted group chosen from pyrazolyl,imidazolyl, pyrazolinyl, imidazolinyl, pyrrolinyl, phenothiazinyl,phenoxazinyl, phenazinyl or acridinyl, each of said substituents beingindependently chosen from C₁-C₆ alkyl, C₁-C₆ alkoxy, phenyl, fluoro,chloro or bromo, (v) a monosubstituted phenyl, said phenyl having asubstituent located at the para position being —(CH₂)_(r)— or—O—(CH₂)_(r)—, wherein r being chosen from the integer 1, 2, 3, 4, 5 or6, said substituent being connected to an aryl group which is a memberof another photochromic material, (vi) a group represented by one of thefollowing formulas,

 wherein A is independently chosen in each formula from methylene oroxygen and D being independently chosen in each formula from oxygen orsubstituted nitrogen, provided that when D is substituted nitrogen, A ismethylene; said nitrogen substituents being chosen from hydrogen, C₁-C₆alkyl, or C₂-C₆ acyl; each R₂₀ being independently chosen for eachoccurrence in each formula from C₁-C₆ alkyl, C₁-C₆ alkoxy, hydroxy,chloro or fluoro; R₁₈ and R₁₉ each being independently chosen in eachformula from hydrogen or C₁-C₆ alkyl; and q being chosen from theinteger 0, 1 or 2; (vii) C₁-C₆ alkyl, C₁-C₆ chloroalkyl, C₁-C₆fluoroalkyl, C₁-C₆ alkoxy(C₁-C₄)alkyl, C₃-C₆ cycloalkyl,mono(C₁-C₆)alkoxy(C₃-C₆)cycloalkyl, mono(C₁-C₆)alkyl(C₃-C₆)-cycloalkyl,chloro(C₃-C₆)cycloalkyl, fluoro(C₃-C₆)cyclo-alkyl or C₄-C₁₂bicycloalkyl; (viii) a group represented by the following formula,

 wherein N is chosen from hydrogen or C₁-C₄ alkyl and M is chosen froman unsubstituted, mono-, or di-substituted group chosen from naphthyl,phenyl, furanyl, or thienyl; each of said group substituents beingindependently chosen from C₁-C₄ alkyl, C₁-C₄ alkoxy, fluoro, or chloro,or (ix) B and B′ taken together form fluoren-9-ylidene, mono-, ordi-substituted fluoren-9-ylidene or a group being independently chosenfrom saturated C₃-C₁₂ spiro-monocyclic hydrocarbon rings, saturatedC₇-C₁₂ spiro-bicyclic hydrocarbon rings or saturated C₇-C₁₂spiro-tricyclic hydrocarbon rings; each of said fluoren-9-ylidenesubstituents being independently chosen from C₁-C₄ alkyl, C₁-C₄ alkoxy,fluoro or chloro, provided that for Formula (II) at least one of andless than all of R₁₂, R₁₃, R₁₄, B, and B′ is in each case independentlysaid L-Group as defined below; (3) a photochromic material chosen fromat least one naphthopyran represented by the following Formula (III),

wherein for Formula (III), (a) R₂₁ is the group, —C(O)W or CH₂Q,described hereinbefore in (1)(d), (b) R₂₂ and each R₂₃ are independentlychosen for each occurrence from hydroxy, NH₂ or N(R)H; wherein R isC₁-C₆ alkyl or aryl and n is chosen from the integers 0, 1, 2, or 3, and(c) B and B′ are each independently chosen from the groups describedhereinbefore in (2)(d), provided that for Formula (III) at least one ofand less than all of R₂₁, R₂₂, R₂₃, B, and B′ is in each caseindependently said L-Group as defined below; (4) a photochromic materialchosen from at least one naphthopyran represented by the followingFormula (IV),

wherein for Formula (IV), (a) R₅ is independently chosen from the groupsdescribed hereinbefore in (1)(d), (b) R₂₄ and R₂₅ are each chosen fromhydrogen or an amino group defined hereinafter, provided that R₂₄ andR₂₅ are not both hydrogen, said amino group being selected from, (i)—N(R₁₆)R₁₇, R₁₆ and R₁₇ each being independently chosen from hydrogen,C₁-C₈ alkyl, aryl, furanyl, benzofuran-2-yl, benzofuran-3-yl, thienyl,benzothien-2-yl, benzothien-3-yl, dibenzofuranyl, dibenzothienyl,benzopyridyl, fluorenyl, C₁-C₈ alkylaryl, C₃-C₂₀ cycloalkyl, C₄-C₂₀bicycloalkyl, C₅-C₂₀ tricycloalkyl or C₁-C₂₀ alkoxyalkyl and said arylgroup being phenyl or naphthyl, (ii) a nitrogen containing ringrepresented by the following formula,

 wherein each Y being independently chosen for each occurrence from—CH₂—, —CH(R₂₆)—, —C(R₂₆)(R₂₆)—, —CH(aryl)-, —C(aryl)₂- or—C(R₂₆)(aryl)-; X being —Y—, —O—, —S—, —S(O)—, —S(O₂)—, —NH—, —N(R₂₆)—or —N(aryl)-; R₂₆ being C₁-C₆ alkyl; said aryl group being phenyl ornaphthyl, m being chosen from the integer 1, 2 or 3 and p being chosenfrom the integer 0, 1, 2 or 3; provided that when p is 0, X is Y, (iii)a group represented by one of the following formulas,

 wherein each R₂₈, R₂₉ and R₃₀ being chosen independently for eachoccurrence in each formula from hydrogen, C₁-C₅ alkyl, phenyl ornaphthyl; or the groups R₂₈ and R₂₉ together form a ring of 5 to 8carbon atoms; R₂₇ being chosen independently for each occurrence fromC₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro or chloro and q being chosen from theinteger 0, 1 or 2, (iv) unsubstituted, mono- or di-substituted C₄-C₁₈spirobicyclic amine, or (v) unsubstituted, mono- or di-substitutedC₄-C₁₈ spirotricyclic amine; said substituents for (iv) and (v) beingindependently chosen for each occurrence from aryl, C₁-C₆ alkyl, C₁₋₆alkoxy or phenyl(C₁-C₆)alkyl, and (c) B and B′ are each independentlychosen from the groups described hereinbefore in (2)(d), provided thatfor Formula (IV) at least one of and less than all of R₅, R₂₄, R₂₅, Band B′ is in each case independently said L-Group as defined below; (5)a photochromic material chosen from at least one phenanthropyranrepresented by at least one of the following Formula (VA) and Formula(VB),

wherein for Formula (VA) and Formula (VB), (a) R₃₁ is the group R₅,described hereinbefore in (1)(d), (b) R₃₂ is hydrogen, C₁-C₆ alkyl,C₁-C₆ alkoxy, C₃-C₇ cycloalkyl, pyridyl, phenyl, mono-substituted ordi-substituted phenyl, said phenyl substituents being C₁-C₆ alkyl, C₁-C₆alkoxy, hydroxy, amino, chloro, or fluoro, (c) each R₃₃ is independentlychosen for each occurrence from chloro, fluoro, amino, C₁-C₆monoalkylamino, —N(R₁₀)R₁₁, which was described hereinbefore in (1)(d),phenyl, C₁-C₆ alkyl, or —OR₃₄, wherein R₃₄ is hydrogen, C₁-C₆ alkyl,allyl, or acetyl, and q is the integer 0, 1, or 2, and (d) B and B′ areeach independently chosen from the groups described hereinbefore in(2)(d), provided that for Formula (VA) and Formula (VB) at least one ofand less than all of R₃₁, R₃₂, R₃₃, B, and B′ is in each caseindependently said L-Group as defined below; (6) a photochromic materialchosen from at least one fluoranthenopyran represented by the followingFormula (VI),

wherein for Formula (VI), (a) R₃₅ and R₃₆ are each independently chosenfor each occurrence from hydroxy, aryl, mono(C₁-C₆)alkoxyaryl,di(C₁-C₆)alkoxyaryl, mono(C₁-C₆)alkylaryl, di(C₁-C₆)alkylaryl,bromoaryl, chloroaryl, fluoroaryl, C₃-C₇ cycloalkylaryl, C₃-C₇cycloalkyl, C₃-C₇ cycloalkyloxy, C₃-C₇ cycloalkyloxy(C₁-C₆)alkyl, C₃-C₇cycloalkyloxy(C₁-C₆)alkoxy, aryl(C₁-C₆)alkyl, aryl(C₁-C₆)alkoxy,aryloxy, aryloxy(C₁-C₆)alkyl, aryloxy(C₁-C₆)alkoxy, mono- ordi(C₁-C₆)alkylaryl(C₁-C₆)alkyl, mono- anddi(C₁-C₆)alkoxyaryl(C₁-C₆)alkyl, mono- ordi(C₁-C₆)alkylaryl(C₁-C₆)alkoxy, mono- ordi(C₁-C₆)alkoxyaryl(C₁-C₆)alkoxy, C₁-C₆ alkyl, C₁-C₆ bromoalkyl, C₁-C₆chloroalkyl, C₁-C₆ fluoroalkyl, C₁-C₆ alkoxy,mono(C₁-C₆)alkoxy(C₁-C₄)alkyl, acryloxy, methacryloxy, bromo, chloro,fluoro, amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino,mono- or di-(C₁-C₆)alkyl substituted phenylamino or mono- ordi-(C₁-C₆)alkoxy substituted phenylamino, and q is the integer 0, 1 or2, (b) R₅ is independently chosen from the groups described hereinbeforein (1)(d), and (c) B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d), provided that for Formula (VI)at least one of and less than all of R₅, R₃₅, R₃₆, B, and B′ is in eachcase independently said L-Group as defined below; (7) a photochromicmaterial chosen from at least one naphthopyran represented by thefollowing Formula (VII),

wherein for Formula (VII), (a) R₃₇ and R₃₈ together form an oxo group orR₃₇ and R₃₈ each are independently chosen for each occurrence fromhydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl, phenyl, mono- ordi-substituted phenyl, benzyl, mono-substituted benzyl, naphthyl, mono-or di-substituted naphthyl, C₄-C₁₂ bicycloalkyl, linear or branchedC₃-C₁₂ alkenyl, C₁-C₆ alkoxy carbonyl(C₁-C₆)alkyl,methacryloxy(C₁-C₆)alkyl, acryloxy(C₁-C₆)alkyl, C₁-C₄acyloxy(C₁-C₆)alkyl, C₁-C₆ alkoxy(C₁-C₆)alkyl or the unsubstituted,mono- or di-substituted heteroaromatic groups pyridyl, furanyl,benzofuran-2-yl, benzyfuran-3-yl, thienyl, benzothien-2-yl,benzothien-3-yl, dibenzofuranyl, dibenzothienyl, carbazolyl,benzopyridyl and indolyl, each of said phenyl, benzyl, naphthyl andheteroaromatic group substituents being C₁-C₆ alkyl, C₁-C₆ alkoxy,morpholino, di(C₁-C₆)alkylamino, chloro or fluoro, (b) R₃₉ is chosenfrom C₁-C₆ alkyl, C₁-C₆ alkoxy, chloro, fluoro, phenyl, mono- anddi-substituted phenyl, benzyl or mono-substituted benzyl, C₃-C₇cycloalkyl, aryloxy, di(C₁-C₆)alkylamino, morpholino, thiomorpholino,piperidino, pyridyl, tetrahydroquinolino, isoquinolino, aziridino,diarylamino, N—(C₁-C₆)alkyl piperizino or N-aryl piperizino, wherein thearyl groups are phenyl or naphthyl, each of said phenyl and benzylsubstituents being C₁-C₆ alkyl, C₁-C₆ alkoxy, fluoro or chloro, and q isthe integer 0, 1 or 2, (c) I is oxygen or —N(R₄₀)—, wherein R₄₀ ishydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl, vinyl, C₁-C₅ acyl,phenyl, mono- or di-substituted phenyl, benzyl, mono-substituted benzyl,C₁-C₄ alkoxycarbonyl(C₁-C₆)alkyl, methacryloxy(C₁-C₆)alkyl,acryloyloxy(C₁-C₆)alkyl, phenyl(C₁-C₆)alkyl, naphthyl, C₄-C₁₂bicycloalkyl, C₂-C₄ acyloxy or the unsubstituted or substitutedheteroaromatic groups pyridyl, furanyl, benzofuran-2-yl,benzofuran-3-yl, thienyl, benzothien-2-yl, benzothien-3-yl,dibenzofuranyl, dibenzothienyl, carbazolyl, benzopyridyl or indolyl,each of said phenyl, benzyl and heteroaromatic group substituents beingC₁-C₆ alkyl or C₁-C₆ alkoxy, (d) K is oxygen, —N(R₄₀)— or —C(R₄₁)(R₄₂)—,wherein R₄₁ and R₄₂ are each hydrogen, C₁-C₆ alkyl or C₃-C₇ cycloalkyl,and (e) B and B′ are each independently chosen from the groups describedhereinbefore in (2)(d), provided that for Formula (VII) at least one ofand less than all of R₃₇, R₃₈, R₃₉, B, and B′ is in each caseindependently said L-Group as defined below; (8) a photochromic materialchosen from at least one naphthopyran represented by the followingFormula (VIII),

wherein for Formula (VIII), (a) R₄₃ and R₄₄ together form an oxo groupor R₄₃ and R₄₄ are both hydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, allyl,phenyl, mono-substituted phenyl, benzyl or mono-substituted benzyl eachof said phenyl and benzyl group substituents being C₁-C₆ alkyl or C₁-C₆alkoxy, (b) R₄₅ is hydrogen, C₁-C₆ alkyl, C₃-C₇ cycloalkyl, or thegroup, CH(B)B′, wherein B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d), (c) R₄₆ is hydrogen, C₁-C₆alkyl, or C₃-C₇ cycloalkyl; (d) each R₄₇ is C₁-C₆ alkyl, C₁-C₆ alkoxy,chloro or fluoro, and q is the integer 0, 1, or 2, and (e) B and B′ areeach independently chosen from the groups described hereinbefore in(2)(d), provided that for Formula (VIII) at least one of and less thanall of R₄₃, R₄₄, R₄₅, R₄₆, R₄₇, B, and B′ is in each case independentlysaid L-Group as defined below; (9) a photochromic material chosen fromat least one naphthopyran represented by the following Formulas (IXA),(IXB), (IXC), (IXD), (IXE), (IXF), (IXG) and (IXH),

wherein independently for each of Formulas (IXA), (IXB), (IXC), (IXD),(IXE), (IXF), (IXG) and (IXH), (a) R₄₃ and R₄₄ are in each caseindependently chosen from groups described hereinbefore in (8)(a); (b)R₄₇ in each case is independently chosen from groups describedhereinbefore in (8)(d), and q is in each case independently as describedhereinbefore in (8)(d), and (c) B and B′ are each independently chosenfrom the groups described hereinbefore in (2)(d), provided thatindependently for each of Formulas (IXA), (IXB), (IXC), (IXD), (IXE),(IXF), (IXG) and (IXH), at least one of and less than all of R₄₃, R₄₄,R₄₇, B, and B′ is in each case independently said L-Group as definedbelow; (10) a photochromic material chosen from at least onenaphthopyran represented by the following Formulae (XA) and Formula(XB),

wherein independently for each of Formula (XA) and Formula (XB), (a)Ring A′ is chosen from, (i) an unsubstituted, monosubstituted ordi-substituted heterocyclic ring chosen from benzothieno, benzofurano orindolo, the 2,3 or 3,2 positions of said heterocyclic ring being fusedto the i, j or k side of said naphthopyran represented by Formula (XA)or said heterocyclic ring is fused to the f side of said naphthopyranrepresented by Formula (XB), or (ii) an unsubstituted, mono-substitutedor di-substituted indeno group fused to the i, j or k side of saidnaphthopyran represented by Formula (XA) or to the f side of saidnaphthopyran represented by Formula (XB); each of said heterocyclic ringand indeno group substituents being C₁-C₆ alkyl, C₅-C₇ cycloalkyl, C₁-C₆alkoxy, —N(R₁₀)R₁₁, which was described hereinbefore in (1)(d), chloro,fluoro, benzo, mono- or di-substituted benzo group fused to the benzoportion of the benzothieno, benzofurano, indeno or indolo moiety, saidbenzo substitutent being C₁-C₆ alkyl, C₅-C₇ cycloalkyl, C₁-C₆ alkylmono-substituted (C₅-C₇)cycloalkyl, C₁-C₆ alkoxy, —N(R₁₀)R₁₁, which wasdescribed hereinbefore in (1)(d), chloro or fluoro, (b) R₄₈ is chosenfrom, (i) —C(O)W′, W′ being —OR₉ or —N(R₁₀)R₁₁, wherein said groups weredescribed hereinbefore in (1)(d), or (ii) —C(R₅₁)₂X′, wherein X′ is —CN,chloro, fluoro, hydroxy, benzoyloxy, C₁-C₆ alkoxy, C₂-C₆ acyloxy, amino,C₁-C₆ mono-alkylamino, C₁-C₆ dialkylamino, morpholino, piperidino,1-indolinyl, pyrrolidyl, or trimethylsilyloxy, R₅₁ is hydrogen, C₁-C₆alkyl, phenyl or naphthyl, and each of said phenyl and heterocyclic ringsubstituents in this part (b)(i) and (ii) being C₁-C₆ alkyl or C₁-C₆alkoxy, (c) R₄₉ is hydrogen, C₁-C₆ alkyl, the mono-, di- ortri-substituted aryl groups phenyl or naphthyl, said aryl substituentsbeing C₁-C₆ alkyl, C₁-C₆ alkoxy, chloro or fluoro, or (d) each R₅₀ ischloro, fluoro, C₁-C₆ alkyl, C₁-C₆ alkoxy, phenyl, naphthyl, phenoxy,naphthoxy or the group, —N(R₁₀)R₁₁, described hereinbefore in (1)(d),and q is selected from the integers 0, 1 or 2 in said naphthopyranrepresented by Formula (XA), or each R₅₀ is chloro, fluoro, phenoxy,naphthoxy or the group, —N(R₁₀)R₁₁, and p is selected from the integers0, 1, 2 or 3 in said naphthopyran represented by Formula (XB), and (e) Band B′ are each independently chosen from the groups describedhereinbefore in (2)(d), provided that independently for each of Formula(XA) and Formula (XB) at least one of and less than all of R₄₈, R₄₉,R₅₀, B, and B′ is in each case independently said L-Group as definedbelow; (11) a photochromic material chosen from at least oneindenonaphthopyran represented by the following Formula (XIA) andFormula (XIB),

wherein independently for each of Formula (XIA) and Formula (XIB), (a)Ring A″ is an unsubstituted, mono-substituted or di-substitutedheterocyclic ring chosen from faro, thieno, benzothieno, benzofurano orindolo, the 2,3 or 3,2 positions of said heterocyclic ring being fusedto the g, h or i side of Formula (XIB) or to the n, o or p side ofFormula (XIA), said heterocyclic ring substituents being C₁-C₆ alkyl,C₅-C₇ cycloalkyl, C₁-C₆ alkoxy, chloro or fluoro, (b) R₅₂ and R₅₃together form an oxo group, a Spiro heterocyclic group having 2 oxygenatoms and from 3 to 6 carbon atoms including the spirocarbon atom, orR₅₂ and R₅₃ are each hydrogen, hydroxy, C₁-C₆ alkyl, C₃-C₇ cycloalkyl,allyl, phenyl, mono-substituted phenyl, benzyl, mono-substituted benzyl,chloro, fluoro or the group, —C(O)W″, wherein each W″ is hydroxy, C₁-C₆alkyl, C₁-C₆ alkoxy, phenyl, mono-substituted phenyl, amino,mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, morpholino, piperidino orpyrrolidyl; or R₅₂ and R₅₃ are each the group, the group, —N(R₁₀)R₁₁,described hereinbefore in (1)(d), or —OR₅₄, wherein each R₅₄ is C₁-C₆alkyl, phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkyl substitutedphenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl,C₁-C₆ alkoxy(C₂-C₄)alkyl, C₃-C₇ cycloalkyl, mono(C₁-C₄)alkyl substitutedC₃-C₇ cycloalkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, allyl, thegroup, —CH(R₅₅)X″, wherein each R₅₅ is hydrogen or C₁-C₃ alkyl, each X″is —CN, —CF₃, or —COOR₅₅, or each R₅₄ is the group, —C(O)Y′, whereineach Y′ is hydrogen, C₁-C₆ alkyl, C₁-C₆ alkoxy, the unsubstituted, mono-or di-substituted aryl groups, phenyl or naphthyl, phenoxy, mono- ordi-(C₁-C₆)alkyl substituted phenoxy, mono- or di-(C₁-C₆)alkoxysubstituted phenoxy, amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino,phenylamino, mono- or di-(C₁-C₆)alkyl substituted phenylamino or mono-or di-(C₁-C₆)alkoxy substituted phenylamino, each of said phenyl, benzylor aryl group substituents being C₁-C₆ alkyl or C₁-C₆ alkoxy, (c) R₄₇ ineach case is independently chosen from groups described hereinbefore in(8)(d), and q is in each case independently as described hereinbefore in(8)(d), and (d) B and B′ are each independently chosen from the groupsdescribed hereinbefore in (2)(d), provided that independently for eachof Formula (XIA) and Formula (XIB) at least one of and less than all ofR₄₇, R₅₂, R₅₃, B, and B′ is in each case independently said L-Group asdefined below; (12) a photochromic material chosen from at least oneindenonaphthopyran represented by Formula (XIIA) and Formula (XIIB),

wherein independently for each of Formula (XIIA) and Formula (XIIB), (a)Ring A″ is independently as described hereinbefore in (11)(a), whereinRing A″ is fused to the g, h or i side of Formula (XIIB) or to the n, oor p side of Formula (XIIA), (b) R₅₆ is hydrogen, hydroxy, bromo, fluoroor chloro and R₅₇ is the group, —CH(V′)₂, wherein V′ is —CN or —COOR₅₈,and each R₅₈ is hydrogen, C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxysubstituted phenyl(C₁-C₃)alkyl or the unsubstituted, mono- ordi-substituted aryl groups phenyl or naphthyl, or R₅₇ is the group,—CH(R₅₉)Y″, wherein R₅₉ is hydrogen, C₁-C₆ alkyl or the unsubstituted,mono- or di-substituted aryl groups phenyl or naphthyl, and Y″ is—COOR₅₈, —COR₅₉, or —CH₂OR₆₀, wherein R₅₉ is hydrogen, C₁-C₆ alkyl, theunsubstituted, mono- or di-substituted aryl groups phenyl or naphthyl,amino, mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino, mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, diphenylamino, mono- or di-(C₁-C₆)alkylsubstituted diphenylamino, mono- or di-(C₁-C₆)alkoxy substituteddiphenylamino, morpholino, or piperidino; R₆₀ is hydrogen, —COR₅₈, C₁-C₆alkyl, C₁-C₃ alkoxy(C₁-C₆)alkyl, phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkylsubstituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxy substitutedphenyl(C₁-C₃)alkyl, or the unsubstituted, mono- or di-substituted arylgroups phenyl or naphthyl, each of said aryl group substituents beingC₁-C₆ alkyl or C₁-C₆ alkoxy, or (c) R₅₆ and R₅₇ together form the group,═C(V)₂ or ═C(R₅₉)W′″, wherein W′″ is —COOR₅₈ or —COR₅₉; (d) R₄₇ in eachcase is independently chosen from groups described hereinbefore in(8)(d), and q is in each case independently as described hereinbefore in(8)(d), and (e) B and B′ are each independently chosen from the groupsdescribed hereinbefore in (2)(d), provided that independently for eachof Formula (XIIA) and Formula (XIIB) at least one of and less than allof R₄₇, R₅₆, R₅₇, B, and B′ is in each case independently said L-Groupas defined below; (13) a photochromic material chosen from at least oneindenonaphthopyran represented by the following Formula (XIII),

wherein for Formula (XIII), (a) R₆₁′ is independently for each q ischosen for each occurrence from, (i) C₁-C₆ alkyl or C₁-C₆ alkoxy,perfluoroalkyl, halogen, cyano, ester; (ii) —SR₆₇, where R₆₇ is chosenfrom C₁-C₆ alkyl, aryl, mono- or di-substituted aryl, said aryl groupbeing phenyl or naphthyl and each of said aryl substitutents beingchosen independently from C₁-C₆ alkyl, C₁-C₆ alkoxy or halogen; and(iii) an amino group described hereinbefore in (4)(b)(i), (ii), (iii),(iv) or (v) with regard to Formula (IV), where q is chosen from theinteger 0, 1, 2 or 3, (b) R₆₁ is chosen from C₁-C₆ alkyl or C₁-C₆alkoxy, perfluoroalkyl and halogen; (c) R₆₂ and R₆₃ are eachindependently chosen from, (i) hydrogen, hydroxy, amino, mono- ordi-substituted amino, C₁-C₁₂ alkyl, C₃-C₁₂ alkylidene, C₂-C₁₂alkylidyne, vinyl, C₃-C₇ cycloalkyl, C₁-C₆ alkoxyalkyl, allyl, benzyl,mono-substituted benzyl, chloro, fluoro or —C(O)W″, wherein W″ being thesame group described hereinbefore in (11)(b); said amino substituents in(c)(i) being C₁-C₆ alkyl, phenyl, benzyl or naphthyl; each of saidbenzyl substituents being C₁-C₆ alkyl or C₁-C₆ alkoxy, (ii) anunsubstituted, mono- di- or tri-substituted group chosen from phenyl,naphthyl, phenanthryl, pyrenyl, quinolyl, isoquinolyl, benzofuranyl,thienyl, benzothienyl, dibenzofuranyl, dibenzothienyl, carbazolyl orindolyl; each of said group substituents in (c)(ii) being chosenindependently for each occurrence from chloro, fluoro, C₁-C₆ alkyl orC₁-C₆ alkoxy, (iii) a monosubstituted phenyl, said phenyl having asubstituent located at the para position being as described hereinbeforein (2)(d)(v), (iv) —OR₆₇, R₆₇ being chosen from C₁-C₆ alkyl, C₁-C₆ acyl,phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl, C₁-C₆alkoxy(C₂-C₄)alkyl, C₃-C₇ cycloalkyl, mono(C₁-C₄)alkyl substituted C₃-C₇cycloalkyl, C₁-C₆ chloroalkyl, C₁-C₆ fluoroalkyl, allyl, triarylsilyl,triarylsilyloxy, tri(C₁-C₆)alkylsilyl, tri(C₁-C₆)alkylsilyloxy,tri(C₁-C₆)alkoxysilyl, tri(C₁-C₆)alkoxysilyloxy, di(C₁-C₆)alkyl(C₁-C₆alkoxy)silyl, di(C₁-C₆)alkyl(C₁-C₆ alkoxy)silyloxy,di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyl, di(C₁-C₆)alkoxy(C₁-C₆ alkyl)silyloxy,benzoyl, mono-substituted benzoyl, naphthoyl or mono-substitutednaphthoyl; each of said benzoyl and naphthoyl substituents beingindependently chosen from C₁-C₆ alkyl or C₁-C₆ alkoxy; or R₆₇ being—CH(R₆₈)Q″, wherein R₆₈ being chosen from hydrogen or C₁-C₃ alkyl and Q″being chosen from —CN, —CF₃, or —COOR₆₈; or R₆₇ being —C(O)V″, whereinV″ being chosen from hydrogen, C₁-C₆ alkoxy, phenoxy, mono- ordi-(C₁-C₆)alkyl substituted phenoxy, mono- or di-(C₁-C₆)alkoxysubstituted phenoxy, an unsubstituted, mono- or di-substituted arylgroup, phenyl or naphthyl, amino, mono(C₁-C₆)alkylamino,di(C₁-C₆)alkylamino, phenylamino, mono- or di-(C₁-C₆)alkyl substitutedphenylamino, or mono- or di-(C₁-C₆)alkoxy substituted phenylamino; eachof said aryl group substituents being independently chosen from C₁-C₆alkyl or C₁-C₆ alkoxy, (v) —CH(Q″)₂, Q″ being chosen from —CN or —COOR₆₉and R₆₉ being chosen from hydrogen, C₁-C₆ alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxysubstituted phenyl(C₁-C₃)alkyl or an unsubstituted, mono- ordi-substituted aryl group, phenyl or naphthyl; each of said aryl groupsubstituents being independently chosen from C₁-C₆ alkyl or C₁-C₆alkoxy, (vi) —CH(R₇₀)G″, R₇₀ being chosen from hydrogen, C₁-C₆ alkyl oran unsubstituted, mono- or di-substituted aryl group, phenyl ornaphthyl, and G″ being chosen from —COOR₆₉, —COR₇₁ or —CH₂OR₇₂, whereinR₇₁ being chosen from hydrogen, C₁-C₆ alkyl, an unsubstituted, mono- ordi-substituted aryl group, phenyl or naphthyl, amino,mono(C₁-C₆)alkylamino, di(C₁-C₆)alkylamino, phenylamino, mono- ordi-(C₁-C₆)alkyl substituted phenylamino, mono- or di-(C₁-C₆)alkoxysubstituted phenylamino, diphenylamino, mono- or di(C₁-C₆)alkylsubstituted diphenylamino, mono- or di(C₁-C₆)alkoxy substituteddiphenylamino, morpholino or piperidino; R₇₂ being chosen from hydrogen,—C(O)R₆₉, C₁-C₆ alkyl, C₁-C₃ alkoxy(C₁-C₆)alkyl, phenyl(C₁-C₃)alkyl,mono(C₁-C₆)alkoxy substituted phenyl(C₁-C₃)alkyl or an unsubstituted,mono- or di-substituted aryl group, phenyl or naphthyl, each of saidaryl group substituents being independently chosen from C₁-C₆ alkyl orC₁-C₆ alkoxy, (vii) the group T being the same as described hereinbeforein (2)(d)(i), or (viii) R₆₂ and R₆₃ together form an oxo group or asubstituted or unsubstituted spiro-carbocyclic ring containing 3 to 6carbon atoms or a substituted or unsubstituted spiro-heterocyclic groupcontaining 1 or 2 oxygen atoms and 3 to 6 carbon atoms including thespirocarbon atom, said spiro-carbocyclic ring and spiro-heterocyclicgroup being annellated with 0, 1 or 2 benzene rings, said substituentsbeing hydrogen or C₁-C₆ alkyl, (d) R₆₄ is chosen from hydrogen, C₁-C₆alkyl, aryl, perfluoroalkyl, halogen, or the group R_(a) chosen from,(i) —OR₇₃, R₇₃ being chosen from phenyl(C₁-C₃)alkyl, C₁-C₆ alkyl,mono(C₁-C₆)alkyl substituted phenyl(C₁-C₃)alkyl, mono(C₁-C₆)alkoxysubstituted phenyl(C₁-C₃)alkyl, C₁-C₆ alkoxy(C₂-C₄)alkyl, C₃-C₇cycloalkyl, mono(C₁-C₄)alkyl substituted C₃-C₇ cycloalkyl, C₁-C₆chloroalkyl, C₁-C₆ fluoroalkyl, allyl or —CH(R₆₈)Q″ described in (c)(i),or (ii) an amino group as described hereinbefore in (4)(b)(i), (ii),(iii), (iv) or (v), (e) R₆₅ is chosen from hydrogen, C₁-C₆ alkyl, aryl,perfluoroalkyl, halogen, or R_(a), said R_(a) being the same asdescribed hereinbefore in (d), (f) R₆₆ is chosen from hydrogen, C₁-C₆alkyl or R_(a), where R_(a) is as described hereinbefore in (d), or (g)R₆₅ and R₆₆ together form one of the following Formulas,

wherein J′ and K′ being independently chosen for each occurrence in eachformula from oxygen or —N(R₁₅)—, where R₁₅ is as described hereinbeforein (2)(b), R₁₈ and R₁₉ each being as described hereinbefore in(2)(d)(vi), and (h) B and B′ are each independently chosen from thegroups described hereinbefore in (2)(d), provided that for Formula(XIII) at least one of and less than all of R₆₁, R_(61′), R₆₂, R₆₃, R₆₄,R₆₅, R₆₆, B, and B′ is in each case independently said L-Group asdefined below; (14) a photochromic material chosen from at least oneindenonaphthopyran represented by the following Formula (XIV),

wherein for Formula (XIV), (a) R₇₄ and R₇₅ are each independently asdescribed hereinbefore with regard to R₆₂ and R₆₃ in (13)(c), (b) eachR₇₆ is independently chosen for each occurrence fromdi(C₁-C₆)alkylamino, dicyclohexylamino, diphenylamino, piperidyl,morpholinyl, pyridyl, a group T, described hereinbefore in (2)(d)(i) orgroup —C(O)W″ described hereinbefore in (11)(b) and q is the integer 0,1, or 2; or when q is 2, and the R₇₆ substituents are adjacent, eachpair of substituents independently forms a substituted or unsubstitutedfused carbocyclic or heterocyclic ring chosen from benzo, pyridino,pyrazino, pyrimidino, furano, dihydrofurano, 1,3-dioxolo, 1,4-dioxolo,1,3-dioxino, thiopheno, benzofuro, benzothieno, indolo, or indeno, thesubstituents of said fused carbocyclic or heterocyclic ring being chosenfrom halogen, C₁-C₆ alkyl, C₁-C₆ alkoxy, amino, mono- or di-substitutedamino, said amino substituents being chosen from C₁-C₆ alkyl, phenyl,benzyl or naphthyl; said first R₇₆ ring being fused to the o, p or qside and said second R₇₆ ring being fused to the g, h, or i side of theindenonaphthopyran, and (c) B and B′ are each independently chosen fromthe groups described hereinbefore in (2)(d), provided that for Formula(XIV) at least one of and less than all of R₇₄, R₇₅, R₇₆, B, and B′ isin each case independently said L-Group as defined below; wherein saidL-Group is independently in each case a chiral or achiral lengtheninggroup represented by the following Formula (XV),—(S₁)_(c)-(Q₁-(S₂)_(d))_(d′)-(Q₂-(S₃)_(e))_(e′)-(Q₃-(S₄)_(f))_(f′)—S₅—P  (XV)wherein, (i) Q₁, Q₂, and Q₃ are each independently for each occurrence adivalent group chosen from, an unsubstituted or a substituted aromaticgroup, an unsubstituted or a substituted alicyclic group, and anunsubstituted or a substituted heterocyclic group, wherein eachsubstituent is independently chosen from, a group represented by P,liquid crystal mesogens, halogen, poly(C₁-C₁₈ alkoxy), C₁-C₁₈alkoxycarbonyl, C₁-C₁₈ alkylcarbonyl, C₁-C₁₈ alkoxycarbonyloxy,aryloxycarbonyloxy, perfluoro(C₁-C₁₈)alkoxy,perfluoro(C₁-C₁₈)alkoxycarbonyl, perfluoro(C₁-C₁₈)alkylcarbonyl,perfluoro(C₁-C₁₈)alkylamino, di-(perfluoro(C₁-C₁₈)alkyl)amino,perfluoro(C₁-C₁₈)alkylthio, C₁-C₁₈ alkylthio, C₁-C₁₈ acetyl, C₃-C₁₀cycloalkyl, C₃-C₁₀ cycloalkoxy, a straight-chain or branched C₁-C₁₈alkyl group that is mono-substituted with cyano, halo, or C₁-C₁₈ alkoxy,or poly-substituted with halo, and a group comprising one of thefollowing formulae: -M(T)_((t-1)) and -M(OT)_((t-1)), wherein M ischosen from aluminum, antimony, tantalum, titanium, zirconium andsilicon, T is chosen from organofunctional radicals, organofunctionalhydrocarbon radicals, aliphatic hydrocarbon radicals and aromatichydrocarbon radicals, and t is the valence of M, (ii) c, d, e, and f areeach independently an integer selected from 0 to 20, inclusive; and S₁,S₂, S₃, S₄, and S₅ are each independently for each occurrence a spacerunit chosen from: (1) —(CH₂)_(g)—, —(CF₂)_(h)—, —Si(Z)₂(CH₂)_(g)—,—(Si(CH₃)₂O)_(h)—, wherein Z is independently chosen for each occurrencefrom hydrogen, C₁-C₁₈ alkyl, C₃-C₁₀ cycloalkyl and aryl; g isindependently chosen for each occurrence from 1 to 20; h is a wholenumber from 1 to 16 inclusive; (2) —N(Z)—, —C(Z)═C(Z)—, —C(Z)═N—,—C(Z′)—C(Z′)— or a single bond, wherein Z is independently chosen foreach occurrence from hydrogen, C₁-C₁₈ alkyl, C₃-C₁₀ cycloalkyl and aryl,and Z′ is independently chosen for each occurrence from C₁-C₁₈ alkyl,C₃-C₁₀ cycloalkyl and aryl; and (3) —O—, —C(O)—, —N═N—, —S—, —S(O)—,—S(O)(O)—, —(O)S(O)—, —(O)S(O)O—, —O(O)S(O)O—, or straight-chain orbranched C₁-C₂₄ alkylene residue, said C₁-C₂₄ alkylene residue beingunsubstituted, mono-substituted by cyano or halo, or poly-substituted byhalo, provided that when two spacer units comprising heteroatoms arelinked together the spacer units are linked so that heteroatoms are notdirectly linked to each other, and provided that when S₁ is linked tosaid photochromic material and S₅ is linked to P, S₁ and S₅ are eachlinked so that two heteroatoms are not directly linked to each other;(iii) P is chosen from: hydroxy, amino, C₂-C₁₈ alkenyl, C₂-C₁₈ alkynyl,azido, silyl, siloxy, silylhydride, (tetrahydro-2H-pyran-2-yl)oxy, thio,isocyanato, thioisocyanato, acryloyloxy, methacryloyloxy,2-(acryloyloxy)ethylcarbamyl, 2-(methacryloyloxy)ethylcarbamyl,aziridinyl, allyloxycarbonyloxy, epoxy, carboxylic acid, carboxylicester, acryloylamino, methacryloylamino, aminocarbonyl, C₁-C₁₈ alkylaminocarbonyl, aminocarbonyl(C₁-C₁₈)alkyl, C₁-C₁₅ alkyloxycarbonyloxy,halocarbonyl, hydrogen, aryl, hydroxy(C₁-C₁₈)alkyl, C₁-C₁₈ alkyl, C₁-C₁₈alkoxy, amino(C₁-C₁₈)alkyl, C₁-C₁₈ alkylamino, di-(C₁-C₁₈)alkylamino,C₁-C₁₈ alkyl(C₁-C₁₈)alkoxy, C₁-C₁₈ alkoxy(C₁-C₁₈)alkoxy, nitro,poly(C₁-C₁₈)alkyl ether, (C₁-C₁₈)alkyl(C₁-C₁₈)alkoxy(C₁-C₁₈)alkyl,polyethyleneoxy, polypropyleneoxy, ethylenyl, acryloyl,acryloyloxy(C₁-C₁₈)alkyl, methacryloyl, methacryloyloxy(C₁-C₁₈)alkyl,2-chloroacryloyl, 2-phenylacryloyl, acryloyloxyphenyl,2-chloroacryloylamino, 2-phenylacryloylaminocarbonyl, oxetanyl,glycidyl, cyano, isocyanato(C₁-C₁₈)alkyl, itaconic acid ester, vinylether, vinyl ester, a styrene derivative, main-chain and side-chainliquid crystal polymers, siloxane derivatives, ethyleneiminederivatives, maleic acid derivatives, fumaric acid derivatives,unsubstituted cinnamic acid derivatives, cinnamic acid derivatives thatare substituted with at least one of methyl, methoxy, cyano and halogen,or substituted or unsubstituted chiral or non-chiral monovalent ordivalent groups chosen from steroid radicals, terpenoid radicals,alkaloid radicals and mixtures thereof, wherein the substituents areindependently chosen from C₁-C₁₈ alkyl, C₁-C₁₈ alkoxy, amino, C₃-C₁₀cycloalkyl, C₁-C₁₈ alkyl(C₁-C₁₈)alkoxy, fluoro(C₁-C₁₈)alkyl, cyano,cyano(C₁-C₁₈)alkyl, cyano(C₁-C₁₈)alkoxy or mixtures thereof, or P is astructure having from 2 to 4 reactive groups, or P is an unsubstitutedor substituted ring opening metathesis polymerization precursor, or P isa substituted or unsubstituted photochromic compound; and (iv) d′, e′and f′ are each independently chosen from 0, 1, 2, 3, and 4, providedthat a sum of d′+e′+f′ is at least 2, wherein said photochromic articlefurther comprises an interpenetrating polymer network comprising, ananisotropic material that is at least partially ordered, and a polymericmaterial, wherein said anisotropic material comprises said photochromicmaterial, and said photochromic material is at least partially alignedwith at least a portion of said anisotropic material.